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mojoshader_opengl.c
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/**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN 1
#include <windows.h> // GL headers need this for WINGDIAPI definition.
#endif
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#if (defined(__APPLE__) && defined(__MACH__))
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#include "TargetConditionals.h"
#if !TARGET_OS_IPHONE && !TARGET_OS_TV
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#define PLATFORM_MACOSX 1
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#endif /* !TARGET_OS_IPHONE && !TARGET_OS_TV */
#endif /* (defined(__APPLE__) && defined(__MACH__)) */
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#if PLATFORM_MACOSX
#include <Carbon/Carbon.h>
#endif
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#define __MOJOSHADER_INTERNAL__ 1
#include "mojoshader_internal.h"
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#define GL_GLEXT_LEGACY 1
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#include "GL/gl.h"
#include "GL/glext.h"
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#if SUPPORT_PROFILE_GLSPIRV
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#include "spirv/spirv.h"
#endif
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#ifndef GL_HALF_FLOAT_NV
#define GL_HALF_FLOAT_NV 0x140B
#endif
#ifndef GL_HALF_FLOAT_ARB
#define GL_HALF_FLOAT_ARB 0x140B
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#endif
#ifndef GL_HALF_FLOAT_OES
#define GL_HALF_FLOAT_OES 0x8D61
#endif
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// this happens to be the same value for ARB1 and GLSL.
#ifndef GL_PROGRAM_POINT_SIZE
#define GL_PROGRAM_POINT_SIZE 0x8642
#endif
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// FIXME: ARB_gl_spirv in glext.h? -flibit
#ifndef GL_ARB_gl_spirv
#define GL_ARB_gl_spirv 1
#define GL_SHADER_BINARY_FORMAT_SPIR_V_ARB 0x9551
typedef void (APIENTRYP PFNGLSPECIALIZESHADERARBPROC) (
GLuint shader,
const GLchar* pEntryPoint,
GLuint numSpecializationConstants,
const GLuint* pConstantIndex,
const GLuint* pConstantValue
);
#endif
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struct MOJOSHADER_glShader
{
const MOJOSHADER_parseData *parseData;
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GLuint handle;
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uint32 refcount;
};
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typedef struct
{
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MOJOSHADER_shaderType shader_type;
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const MOJOSHADER_uniform *uniform;
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GLint location;
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} UniformMap;
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typedef struct
{
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const MOJOSHADER_attribute *attribute;
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GLint location;
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} AttributeMap;
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struct MOJOSHADER_glProgram
{
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MOJOSHADER_glShader *vertex;
MOJOSHADER_glShader *fragment;
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GLuint handle;
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uint32 generation;
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uint32 uniform_count;
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uint32 texbem_count;
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UniformMap *uniforms;
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uint32 attribute_count;
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AttributeMap *attributes;
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size_t vs_uniforms_float4_count;
GLfloat *vs_uniforms_float4;
size_t vs_uniforms_int4_count;
GLint *vs_uniforms_int4;
size_t vs_uniforms_bool_count;
GLint *vs_uniforms_bool;
size_t ps_uniforms_float4_count;
GLfloat *ps_uniforms_float4;
size_t ps_uniforms_int4_count;
GLint *ps_uniforms_int4;
size_t ps_uniforms_bool_count;
GLint *ps_uniforms_bool;
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uint32 refcount;
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int uses_pointsize;
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// According to MSDN...
//
// n is an optional integer between 0 and the number of resources supported.
// For example, POSITION0, TEXCOOR1, etc.
//
// The input registers consist of 16 four-component floating-point vectors,
// designated as v0 through v15.
GLint vertex_attrib_loc[MOJOSHADER_USAGE_TOTAL][16];
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// GLSL uses these...location of uniform arrays.
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GLint vs_float4_loc;
GLint vs_int4_loc;
GLint vs_bool_loc;
GLint ps_float4_loc;
GLint ps_int4_loc;
GLint ps_bool_loc;
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// Numerous fixes for coordinate system mismatches
GLint ps_vpos_flip_loc;
int current_vpos_flip[2];
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#ifdef MOJOSHADER_FLIP_RENDERTARGET
GLint vs_flip_loc;
int current_flip;
#endif
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};
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#ifndef WINGDIAPI
#define WINGDIAPI
#endif
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// Entry points in base OpenGL that lack function pointer prototypes...
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typedef WINGDIAPI void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *params);
typedef WINGDIAPI const GLubyte * (APIENTRYP PFNGLGETSTRINGPROC) (GLenum name);
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typedef WINGDIAPI GLenum (APIENTRYP PFNGLGETERRORPROC) (void);
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typedef WINGDIAPI void (APIENTRYP PFNGLENABLEPROC) (GLenum cap);
typedef WINGDIAPI void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap);
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// Max entries for each register file type...
#define MAX_REG_FILE_F 8192
#define MAX_REG_FILE_I 2047
#define MAX_REG_FILE_B 2047
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#define MAX_TEXBEMS 3 // ps_1_1 allows 4 texture stages, texbem can't use t0.
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struct MOJOSHADER_glContext
{
// Allocators...
MOJOSHADER_malloc malloc_fn;
MOJOSHADER_free free_fn;
void *malloc_data;
// The constant register files...
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// !!! FIXME: Man, it kills me how much memory this takes...
// !!! FIXME: ... make this dynamically allocated on demand.
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GLfloat vs_reg_file_f[MAX_REG_FILE_F * 4];
GLint vs_reg_file_i[MAX_REG_FILE_I * 4];
uint8 vs_reg_file_b[MAX_REG_FILE_B];
GLfloat ps_reg_file_f[MAX_REG_FILE_F * 4];
GLint ps_reg_file_i[MAX_REG_FILE_I * 4];
uint8 ps_reg_file_b[MAX_REG_FILE_B];
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GLuint sampler_reg_file[16];
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GLfloat texbem_state[MAX_TEXBEMS * 6];
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// This increments every time we change the register files.
uint32 generation;
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// This keeps track of implicitly linked programs.
HashTable *linker_cache;
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// This tells us which vertex attribute arrays we have enabled.
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GLint max_attrs;
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uint8 want_attr[32];
uint8 have_attr[32];
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// This shadows vertex attribute and divisor states.
GLuint attr_divisor[32];
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// rarely used, so we don't touch when we don't have to.
int pointsize_enabled;
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// GL stuff...
int opengl_major;
int opengl_minor;
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int glsl_major;
int glsl_minor;
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MOJOSHADER_glProgram *bound_program;
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char profile[16];
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#ifdef MOJOSHADER_XNA4_VERTEX_TEXTURES
// Vertex texture sampler offset...
int vertex_sampler_offset;
#endif
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// Extensions...
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int have_core_opengl;
int have_opengl_2; // different entry points than ARB extensions.
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int have_opengl_3; // different extension query.
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int have_opengl_es; // different extension requirements
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int have_GL_ARB_vertex_program;
int have_GL_ARB_fragment_program;
int have_GL_NV_vertex_program2_option;
int have_GL_NV_fragment_program2;
int have_GL_NV_vertex_program3;
int have_GL_NV_gpu_program4;
int have_GL_ARB_shader_objects;
int have_GL_ARB_vertex_shader;
int have_GL_ARB_fragment_shader;
int have_GL_ARB_shading_language_100;
int have_GL_NV_half_float;
int have_GL_ARB_half_float_vertex;
int have_GL_OES_vertex_half_float;
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int have_GL_ARB_instanced_arrays;
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int have_GL_ARB_ES2_compatibility;
int have_GL_ARB_gl_spirv;
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// Entry points...
PFNGLGETSTRINGPROC glGetString;
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PFNGLGETSTRINGIPROC glGetStringi;
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PFNGLGETERRORPROC glGetError;
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PFNGLGETINTEGERVPROC glGetIntegerv;
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PFNGLENABLEPROC glEnable;
PFNGLDISABLEPROC glDisable;
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PFNGLDELETESHADERPROC glDeleteShader;
PFNGLDELETEPROGRAMPROC glDeleteProgram;
PFNGLATTACHSHADERPROC glAttachShader;
PFNGLCOMPILESHADERPROC glCompileShader;
PFNGLCREATESHADERPROC glCreateShader;
PFNGLCREATEPROGRAMPROC glCreateProgram;
PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
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PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
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PFNGLGETSHADERIVPROC glGetShaderiv;
PFNGLGETPROGRAMIVPROC glGetProgramiv;
PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
PFNGLLINKPROGRAMPROC glLinkProgram;
PFNGLSHADERSOURCEPROC glShaderSource;
PFNGLUNIFORM1IPROC glUniform1i;
PFNGLUNIFORM1IVPROC glUniform1iv;
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PFNGLUNIFORM2FPROC glUniform2f;
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#ifdef MOJOSHADER_FLIP_RENDERTARGET
PFNGLUNIFORM1FPROC glUniform1f;
#endif
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PFNGLUNIFORM4FVPROC glUniform4fv;
PFNGLUNIFORM4IVPROC glUniform4iv;
PFNGLUSEPROGRAMPROC glUseProgram;
PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocationARB;
PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
PFNGLUNIFORM1IARBPROC glUniform1iARB;
PFNGLUNIFORM1IVARBPROC glUniform1ivARB;
PFNGLUNIFORM4FVARBPROC glUniform4fvARB;
PFNGLUNIFORM4IVARBPROC glUniform4ivARB;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
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PFNGLGETPROGRAMIVARBPROC glGetProgramivARB;
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PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB;
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PFNGLPROGRAMLOCALPARAMETERI4IVNVPROC glProgramLocalParameterI4ivNV;
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PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB;
PFNGLGENPROGRAMSARBPROC glGenProgramsARB;
PFNGLBINDPROGRAMARBPROC glBindProgramARB;
PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
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PFNGLVERTEXATTRIBDIVISORARBPROC glVertexAttribDivisorARB;
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PFNGLSHADERBINARYPROC glShaderBinary;
PFNGLSPECIALIZESHADERARBPROC glSpecializeShaderARB;
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// interface for profile-specific things.
int (*profileMaxUniforms)(MOJOSHADER_shaderType shader_type);
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int (*profileCompileShader)(const MOJOSHADER_parseData *pd, GLuint *s);
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void (*profileDeleteShader)(const GLuint shader);
void (*profileDeleteProgram)(const GLuint program);
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GLint (*profileGetAttribLocation)(MOJOSHADER_glProgram *program, int idx);
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GLint (*profileGetUniformLocation)(MOJOSHADER_glProgram *program, MOJOSHADER_glShader *shader, int idx);
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GLint (*profileGetSamplerLocation)(MOJOSHADER_glProgram *, MOJOSHADER_glShader *, int);
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GLuint (*profileLinkProgram)(MOJOSHADER_glShader *, MOJOSHADER_glShader *);
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void (*profileFinalInitProgram)(MOJOSHADER_glProgram *program);
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void (*profileUseProgram)(MOJOSHADER_glProgram *program);
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void (*profilePushConstantArray)(MOJOSHADER_glProgram *, const MOJOSHADER_uniform *, const GLfloat *);
void (*profilePushUniforms)(void);
void (*profilePushSampler)(GLint loc, GLuint sampler);
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int (*profileMustPushConstantArrays)(void);
int (*profileMustPushSamplers)(void);
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void (*profileToggleProgramPointSize)(int enable);
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};
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static MOJOSHADER_glContext *ctx = NULL;
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// Error state...
static char error_buffer[1024] = { '\0' };
static void set_error(const char *str)
{
snprintf(error_buffer, sizeof (error_buffer), "%s", str);
} // set_error
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#if PLATFORM_MACOSX
static inline int macosx_version_atleast(int x, int y, int z)
{
static int checked = 0;
static int combined = 0;
if (!checked)
{
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SInt32 ver = 0;
SInt32 major = 0;
SInt32 minor = 0;
SInt32 patch = 0;
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int convert = 0;
if (Gestalt(gestaltSystemVersion, &ver) != noErr)
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{
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ver = 0x1000; // oh well.
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convert = 1; // split (ver) into (major),(minor),(patch).
}
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else if (ver < 0x1030)
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{
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convert = 1; // split (ver) into (major),(minor),(patch).
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}
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else
{
// presumably this won't fail. But if it does, we'll just use the
// original version value. This might cut the value--10.12.11 will
// come out to 10.9.9, for example--but it's better than nothing.
if (Gestalt(gestaltSystemVersionMajor, &major) != noErr)
convert = 1;
else if (Gestalt(gestaltSystemVersionMinor, &minor) != noErr)
convert = 1;
else if (Gestalt(gestaltSystemVersionBugFix, &patch) != noErr)
convert = 1;
} // else
if (convert)
{
major = ((ver & 0xFF00) >> 8);
major = (((major / 16) * 10) + (major % 16));
minor = ((ver & 0xF0) >> 4);
patch = (ver & 0xF);
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} // if
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combined = (major << 16) | (minor << 8) | patch;
checked = 1;
} // if
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return (combined >= ((x << 16) | (y << 8) | z));
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} // macosx_version_atleast
#endif
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static inline void out_of_memory(void)
{
set_error("out of memory");
} // out_of_memory
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static inline void *Malloc(const size_t len)
{
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void *retval = ctx->malloc_fn((int) len, ctx->malloc_data);
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if (retval == NULL)
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out_of_memory();
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return retval;
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} // Malloc
static inline void Free(void *ptr)
{
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if (ptr != NULL)
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ctx->free_fn(ptr, ctx->malloc_data);
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} // Free
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static inline void toggle_gl_state(GLenum state, int val)
{
if (val)
ctx->glEnable(state);
else
ctx->glDisable(state);
} // toggle_gl_state
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// profile-specific implementations...
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#if SUPPORT_PROFILE_GLSL || SUPPORT_PROFILE_GLSPIRV
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static inline GLenum glsl_shader_type(const MOJOSHADER_shaderType t)
{
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// these enums match between core 2.0 and the ARB extensions.
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if (t == MOJOSHADER_TYPE_VERTEX)
return GL_VERTEX_SHADER;
else if (t == MOJOSHADER_TYPE_PIXEL)
return GL_FRAGMENT_SHADER;
// !!! FIXME: geometry shaders?
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assert(0 && "Unknown GLSL shader type!");
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return GL_NONE;
} // glsl_shader_type
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static int impl_GLSL_MustPushConstantArrays(void) { return 1; }
static int impl_GLSL_MustPushSamplers(void) { return 1; }
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static int impl_GLSL_MaxUniforms(MOJOSHADER_shaderType shader_type)
{
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// these enums match between core 2.0 and the ARB extensions.
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GLenum pname = GL_NONE;
GLint val = 0;
if (shader_type == MOJOSHADER_TYPE_VERTEX)
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pname = GL_MAX_VERTEX_UNIFORM_COMPONENTS;
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else if (shader_type == MOJOSHADER_TYPE_PIXEL)
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pname = GL_MAX_FRAGMENT_UNIFORM_COMPONENTS;
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else
return -1;
ctx->glGetIntegerv(pname, &val);
return (int) val;
} // impl_GLSL_MaxUniforms
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#if SUPPORT_PROFILE_GLSPIRV
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static const SpirvPatchTable* spv_getPatchTable(MOJOSHADER_glShader *shader)
{
const MOJOSHADER_parseData *pd = shader->parseData;
size_t table_offset = pd->output_len - sizeof(SpirvPatchTable);
return (const SpirvPatchTable *) (pd->output + table_offset);
} // spv_getPatchTable
static int spv_CompileShader(const MOJOSHADER_parseData *pd, int32 base_location, GLuint *s, int32 patch_pcoord)
{
GLint ok = 0;
GLsizei data_len = pd->output_len - sizeof(SpirvPatchTable);
const GLvoid* data = pd->output;
uint32 *patched_data = NULL;
if (base_location || patch_pcoord)
{
size_t i, max;
patched_data = (uint32 *) Malloc(data_len);
memcpy(patched_data, data, data_len);
const SpirvPatchTable *table = (const SpirvPatchTable *) &pd->output[data_len];
if (table->vpflip.offset) patched_data[table->vpflip.offset] += base_location;
if (table->array_vec4.offset) patched_data[table->array_vec4.offset] += base_location;
if (table->array_ivec4.offset) patched_data[table->array_ivec4.offset] += base_location;
if (table->array_bool.offset) patched_data[table->array_bool.offset] += base_location;
for (i = 0, max = STATICARRAYLEN(table->samplers); i < max; i++)
{
SpirvPatchEntry entry = table->samplers[i];
if (entry.offset)
patched_data[entry.offset] += base_location;
} // for
if (patch_pcoord && table->ps_texcoord0_offset)
{
// Subtract 3 to get from Location value offset to start of op.
uint32 op_base = table->ps_texcoord0_offset - 3;
assert(patched_data[op_base+0] == (SpvOpDecorate | (4 << 16)));
assert(patched_data[op_base+2] == SpvDecorationLocation);
patched_data[op_base+2] = SpvDecorationBuiltIn;
patched_data[op_base+3] = SpvBuiltInPointCoord;
} // if
data = patched_data;
} // if
const GLuint shader = ctx->glCreateShader(glsl_shader_type(pd->shader_type));
ctx->glShaderBinary(1, &shader, GL_SHADER_BINARY_FORMAT_SPIR_V_ARB, data, data_len);
ctx->glSpecializeShaderARB(shader, pd->mainfn, 0, NULL, NULL); // FIXME: Spec Constants? -flibit
ctx->glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
if (patched_data)
Free(patched_data);
if (!ok)
{
GLsizei len = 0;
ctx->glGetShaderInfoLog(shader, sizeof(error_buffer), &len,
(GLchar *) error_buffer);
ctx->glDeleteShader(shader);
*s = 0;
return 0;
} // if
*s = shader;
return 1;
} // spv_CompileShader
static int impl_SPIRV_CompileShader(const MOJOSHADER_parseData *pd, GLuint *s)
{
// Compilation postponed until linking, but generate dummy shader id so hash table lookups work.
*s = ctx->glCreateShader(glsl_shader_type(pd->shader_type));
return 1;
} // impl_SPIRV_CompileShader
static GLuint impl_SPIRV_LinkProgram(MOJOSHADER_glShader *vshader,
MOJOSHADER_glShader *pshader)
{
GLint ok = 0;
// Shader compilation postponed until linking due to uniform locations being global in program.
// To avoid overlap between VS and PS, we need to know about other shader stages to assign final
// uniform locations before compilation.
GLuint vs_handle = 0;
int32 base_location = 0;
int32 patch_pcoord = 0;
if (vshader)
{
if (!spv_CompileShader(vshader->parseData, base_location, &vs_handle, patch_pcoord))
return 0;
const SpirvPatchTable* patch_table = spv_getPatchTable(vshader);
base_location += patch_table->location_count;
patch_pcoord = patch_table->vs_has_psize;
} // if
GLuint ps_handle = 0;
if (pshader)
{
if (!spv_CompileShader(pshader->parseData, base_location, &ps_handle, patch_pcoord))
return 0;
} // if
if (ctx->have_opengl_2)
{
const GLuint program = ctx->glCreateProgram();
if (vs_handle)
{
ctx->glAttachShader(program, vs_handle);
ctx->glDeleteShader(vs_handle);
} // if
if (ps_handle)
{
ctx->glAttachShader(program, ps_handle);
ctx->glDeleteShader(ps_handle);
} // if
ctx->glLinkProgram(program);
ctx->glGetProgramiv(program, GL_LINK_STATUS, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetProgramInfoLog(program, sizeof (error_buffer),
&len, (GLchar *) error_buffer);
ctx->glDeleteProgram(program);
return 0;
} // if
return program;
} // if
else
{
const GLhandleARB program = ctx->glCreateProgramObjectARB();
assert(sizeof(program) == sizeof(GLuint)); // not always true on OS X!
if (vs_handle)
{
ctx->glAttachObjectARB(program, (GLhandleARB) vs_handle);
ctx->glDeleteObjectARB((GLhandleARB) vs_handle);
} // if
if (ps_handle)
{
ctx->glAttachObjectARB(program, (GLhandleARB) ps_handle);
ctx->glDeleteObjectARB((GLhandleARB) ps_handle);
} // if
ctx->glLinkProgramARB(program);
ctx->glGetObjectParameterivARB(program, GL_OBJECT_LINK_STATUS_ARB, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(program, sizeof (error_buffer),
&len, (GLcharARB *) error_buffer);
ctx->glDeleteObjectARB(program);
return 0;
} // if
return (GLuint) program;
} // else
} // impl_SPIRV_LinkProgram
static void impl_SPIRV_DeleteShader(const GLuint shader)
{
ctx->glDeleteShader(shader);
} // impl_SPIRV_DeleteShader
static void impl_SPIRV_DeleteProgram(const GLuint program)
{
if (ctx->have_opengl_2)
ctx->glDeleteProgram(program);
else
ctx->glDeleteObjectARB((GLhandleARB) program);
} // impl_SPIRV_DeleteProgram
static GLint impl_SPIRV_GetAttribLocation(MOJOSHADER_glProgram *program, int idx)
{
return idx;
} // impl_SPIRV_GetAttribLocation
static GLint impl_SPIRV_GetUniformLocation(MOJOSHADER_glProgram *program, MOJOSHADER_glShader *shader, int idx)
{
return 0; // no-op, we push this as one big-ass array now.
} // impl_SPIRV_GetUniformLocation
static GLint impl_SPIRV_GetSamplerLocation(MOJOSHADER_glProgram *program, MOJOSHADER_glShader *shader, int idx)
{
const SpirvPatchTable *table = spv_getPatchTable(shader);
GLint location = table->samplers[idx].location;
if (location == -1)
return location;
assert(location >= 0);
if (shader->parseData->shader_type == MOJOSHADER_TYPE_PIXEL)
location += spv_getPatchTable(program->vertex)->location_count;
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return location;
} // impl_SPIRV_GetSamplerLocation
static void impl_SPIRV_FinalInitProgram(MOJOSHADER_glProgram *program)
{
const SpirvPatchTable *vs_table = spv_getPatchTable(program->vertex);
const SpirvPatchTable *ps_table = spv_getPatchTable(program->fragment);
program->vs_float4_loc = vs_table->array_vec4.location;
program->vs_int4_loc = vs_table->array_ivec4.location;
program->vs_bool_loc = vs_table->array_bool.location;
program->ps_float4_loc = ps_table->array_vec4.location;
program->ps_int4_loc = ps_table->array_ivec4.location;
program->ps_bool_loc = ps_table->array_bool.location;
program->ps_vpos_flip_loc = ps_table->vpflip.location;
#ifdef MOJOSHADER_FLIP_RENDERTARGET
program->vs_flip_loc = vs_table->vpflip.location;
#endif
int32 ps_base_location = vs_table->location_count;
if (ps_base_location)
{
if (program->ps_float4_loc != -1) program->ps_float4_loc += ps_base_location;
if (program->ps_int4_loc != -1) program->ps_int4_loc += ps_base_location;
if (program->ps_bool_loc != -1) program->ps_bool_loc += ps_base_location;
if (program->ps_vpos_flip_loc != -1) program->ps_vpos_flip_loc += ps_base_location;
} // if
} // impl_SPIRV_FinalInitProgram
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#endif // SUPPORT_PROFILE_GLSPIRV
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#if SUPPORT_PROFILE_GLSL
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static int impl_GLSL_CompileShader(const MOJOSHADER_parseData *pd, GLuint *s)
{
GLint ok = 0;
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const GLint codelen = (GLint) pd->output_len;
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const GLenum shader_type = glsl_shader_type(pd->shader_type);
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if (ctx->have_opengl_2)
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{
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const GLuint shader = ctx->glCreateShader(shader_type);
ctx->glShaderSource(shader, 1, (const GLchar**) &pd->output, &codelen);
ctx->glCompileShader(shader);
ctx->glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
if (!ok)
{
GLsizei len = 0;
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ctx->glGetShaderInfoLog(shader, sizeof (error_buffer), &len,
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(GLchar *) error_buffer);
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ctx->glDeleteShader(shader);
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*s = 0;
return 0;
} // if
*s = shader;
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} // if
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else
{
const GLhandleARB shader = ctx->glCreateShaderObjectARB(shader_type);
assert(sizeof (shader) == sizeof (*s)); // not always true on OS X!
ctx->glShaderSourceARB(shader, 1,
(const GLcharARB **) &pd->output, &codelen);
ctx->glCompileShaderARB(shader);
ctx->glGetObjectParameterivARB(shader,GL_OBJECT_COMPILE_STATUS_ARB,&ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(shader, sizeof (error_buffer), &len,
(GLcharARB *) error_buffer);
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ctx->glDeleteObjectARB(shader);
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*s = 0;
return 0;
} // if
*s = (GLuint) shader;
} // else
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return 1;
} // impl_GLSL_CompileShader
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#endif // SUPPORT_PROFILE_GLSL
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static void impl_GLSL_DeleteShader(const GLuint shader)
{
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if (ctx->have_opengl_2)
ctx->glDeleteShader(shader);
else
ctx->glDeleteObjectARB((GLhandleARB) shader);
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} // impl_GLSL_DeleteShader
static void impl_GLSL_DeleteProgram(const GLuint program)
{
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if (ctx->have_opengl_2)
ctx->glDeleteProgram(program);
else
ctx->glDeleteObjectARB((GLhandleARB) program);
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} // impl_GLSL_DeleteProgram
static GLint impl_GLSL_GetUniformLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
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return 0; // no-op, we push this as one big-ass array now.
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} // impl_GLSL_GetUniformLocation
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static inline GLint glsl_uniform_loc(MOJOSHADER_glProgram *program,
const char *name)
{
return ctx->have_opengl_2 ?
ctx->glGetUniformLocation(program->handle, name) :
ctx->glGetUniformLocationARB((GLhandleARB) program->handle, name);
} // glsl_uniform_loc
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static GLint impl_GLSL_GetSamplerLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
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return glsl_uniform_loc(program, shader->parseData->samplers[idx].name);
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} // impl_GLSL_GetSamplerLocation
static GLint impl_GLSL_GetAttribLocation(MOJOSHADER_glProgram *program, int idx)
{
const MOJOSHADER_parseData *pd = program->vertex->parseData;
const MOJOSHADER_attribute *a = pd->attributes;
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if (ctx->have_opengl_2)
{
return ctx->glGetAttribLocation(program->handle,
(const GLchar *) a[idx].name);
} // if
return ctx->glGetAttribLocationARB((GLhandleARB) program->handle,
(const GLcharARB *) a[idx].name);
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} // impl_GLSL_GetAttribLocation
static GLuint impl_GLSL_LinkProgram(MOJOSHADER_glShader *vshader,
MOJOSHADER_glShader *pshader)
{
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GLint ok = 0;
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if (ctx->have_opengl_2)
{
const GLuint program = ctx->glCreateProgram();
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if (vshader != NULL) ctx->glAttachShader(program, vshader->handle);
if (pshader != NULL) ctx->glAttachShader(program, pshader->handle);
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ctx->glLinkProgram(program);
ctx->glGetProgramiv(program, GL_LINK_STATUS, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetProgramInfoLog(program, sizeof (error_buffer),
&len, (GLchar *) error_buffer);
ctx->glDeleteProgram(program);
return 0;
} // if
return program;
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} // if
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else
{
const GLhandleARB program = ctx->glCreateProgramObjectARB();
assert(sizeof(program) == sizeof(GLuint)); // not always true on OS X!
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if (vshader != NULL)
ctx->glAttachObjectARB(program, (GLhandleARB) vshader->handle);
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if (pshader != NULL)
ctx->glAttachObjectARB(program, (GLhandleARB) pshader->handle);
ctx->glLinkProgramARB(program);
ctx->glGetObjectParameterivARB(program, GL_OBJECT_LINK_STATUS_ARB, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(program, sizeof (error_buffer),
&len, (GLcharARB *) error_buffer);
ctx->glDeleteObjectARB(program);
return 0;
} // if
return (GLuint) program;
} // else
} // impl_GLSL_LinkProgram
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static void impl_GLSL_FinalInitProgram(MOJOSHADER_glProgram *program)
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{
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program->vs_float4_loc = glsl_uniform_loc(program, "vs_uniforms_vec4");
program->vs_int4_loc = glsl_uniform_loc(program, "vs_uniforms_ivec4");
program->vs_bool_loc = glsl_uniform_loc(program, "vs_uniforms_bool");
program->ps_float4_loc = glsl_uniform_loc(program, "ps_uniforms_vec4");
program->ps_int4_loc = glsl_uniform_loc(program, "ps_uniforms_ivec4");
program->ps_bool_loc = glsl_uniform_loc(program, "ps_uniforms_bool");
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program->ps_vpos_flip_loc = glsl_uniform_loc(program, "vposFlip");
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#ifdef MOJOSHADER_FLIP_RENDERTARGET
program->vs_flip_loc = glsl_uniform_loc(program, "vpFlip");
#endif
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} // impl_GLSL_FinalInitProgram
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static void impl_GLSL_UseProgram(MOJOSHADER_glProgram *program)
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{
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if (ctx->have_opengl_2)
ctx->glUseProgram(program ? program->handle : 0);
else
ctx->glUseProgramObjectARB((GLhandleARB) (program ? program->handle : 0));
} // impl_GLSL_UseProgram
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static void impl_GLSL_PushConstantArray(MOJOSHADER_glProgram *program,
const MOJOSHADER_uniform *u,
const GLfloat *f)
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{
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const GLint loc = glsl_uniform_loc(program, u->name);
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if (loc >= 0) // not optimized out?
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ctx->glUniform4fv(loc, u->array_count, f);
} // impl_GLSL_PushConstantArray
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static void impl_GLSL_PushUniforms(void)
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{
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const MOJOSHADER_glProgram *program = ctx->bound_program;
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assert(program->uniform_count > 0); // don't call with nothing to do!
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if (program->vs_float4_loc != -1)
{
ctx->glUniform4fv(program->vs_float4_loc,
program->vs_uniforms_float4_count,
program->vs_uniforms_float4);
} // if
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if (program->vs_int4_loc != -1)
{
ctx->glUniform4iv(program->vs_int4_loc,
program->vs_uniforms_int4_count,
program->vs_uniforms_int4);
} // if
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if (program->vs_bool_loc != -1)
{
ctx->glUniform1iv(program->vs_bool_loc,
program->vs_uniforms_bool_count,
program->vs_uniforms_bool);
} // if
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if (program->ps_float4_loc != -1)
{
ctx->glUniform4fv(program->ps_float4_loc,
program->ps_uniforms_float4_count,
program->ps_uniforms_float4);
} // if
if (program->ps_int4_loc != -1)
{
ctx->glUniform4iv(program->ps_int4_loc,
program->ps_uniforms_int4_count,
program->ps_uniforms_int4);
} // if
if (program->ps_bool_loc != -1)
{
ctx->glUniform1iv(program->ps_bool_loc,
program->ps_uniforms_bool_count,
program->ps_uniforms_bool);
} // if
} // impl_GLSL_PushUniforms
static void impl_GLSL_PushSampler(GLint loc, GLuint sampler)
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{
ctx->glUniform1i(loc, sampler);
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} // impl_GLSL_PushSampler
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#endif // SUPPORT_PROFILE_GLSL || SUPPORT_PROFILE_GLSPIRV
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#if SUPPORT_PROFILE_ARB1
static inline GLenum arb1_shader_type(const MOJOSHADER_shaderType t)
{
if (t == MOJOSHADER_TYPE_VERTEX)
return GL_VERTEX_PROGRAM_ARB;
else if (t == MOJOSHADER_TYPE_PIXEL)
return GL_FRAGMENT_PROGRAM_ARB;
// !!! FIXME: geometry shaders?
return GL_NONE;
} // arb1_shader_type
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static int impl_ARB1_MustPushConstantArrays(void) { return 0; }
static int impl_ARB1_MustPushSamplers(void) { return 0; }
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static int impl_ARB1_MaxUniforms(MOJOSHADER_shaderType shader_type)
{
GLint retval = 0;
const GLenum program_type = arb1_shader_type(shader_type);
if (program_type == GL_NONE)
return -1;
ctx->glGetProgramivARB(program_type, GL_MAX_PROGRAM_PARAMETERS_ARB, &retval);
return (int) retval; // !!! FIXME: times four?
} // impl_ARB1_MaxUniforms
static int impl_ARB1_CompileShader(const MOJOSHADER_parseData *pd, GLuint *s)
{
GLint shaderlen = (GLint) pd->output_len;
const GLenum shader_type = arb1_shader_type(pd->shader_type);
GLuint shader = 0;
ctx->glGenProgramsARB(1, &shader);
ctx->glGetError(); // flush any existing error state.
ctx->glBindProgramARB(shader_type, shader);
ctx->glProgramStringARB(shader_type, GL_PROGRAM_FORMAT_ASCII_ARB,
shaderlen, pd->output);
if (ctx->glGetError() == GL_INVALID_OPERATION)
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{
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GLint pos = 0;
ctx->glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &pos);
const GLubyte *errstr = ctx->glGetString(GL_PROGRAM_ERROR_STRING_ARB);
snprintf(error_buffer, sizeof (error_buffer),
"ARB1 compile error at position %d: %s",
(int) pos, (const char *) errstr);
ctx->glBindProgramARB(shader_type, 0);
ctx->glDeleteProgramsARB(1, &shader);
*s = 0;
return 0;
} // if
*s = shader;
return 1;
} // impl_ARB1_CompileShader
static void impl_ARB1_DeleteShader(const GLuint _shader)
{
GLuint shader = _shader; // const removal.
ctx->glDeleteProgramsARB(1, &shader);
} // impl_ARB1_DeleteShader
static void impl_ARB1_DeleteProgram(const GLuint program)
{
// no-op. ARB1 doesn't have real linked programs.
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} // impl_ARB1_DeleteProgram
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static GLint impl_ARB1_GetUniformLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
994
return 0; // no-op, we push this as one big-ass array now.
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} // impl_ARB1_GetUniformLocation
static GLint impl_ARB1_GetSamplerLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
return shader->parseData->samplers[idx].index;