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ref_gl: added multisample textures support

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This commit is contained in:
SNMetamorph 2021-11-22 13:48:39 +04:00 committed by a1batross
parent c366e25a10
commit 6c9321e50c
5 changed files with 42 additions and 0 deletions
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1
common/render_api.h
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@ -107,6 +107,7 @@ typedef enum
TF_ARB_FLOAT = (1<<26), // float textures
TF_NOCOMPARE = (1<<27), // disable comparing for depth textures
TF_ARB_16BIT = (1<<28), // keep image as 16-bit (not 24)
TF_MULTISAMPLE = (1<<29) // multisampling texture
} texFlags_t;
typedef enum

2
ref_gl/gl_export.h
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@ -687,6 +687,7 @@ typedef float GLmatrix[16];
#define GL_SAMPLE_COVERAGE_VALUE_ARB 0x80AA
#define GL_SAMPLE_COVERAGE_INVERT_ARB 0x80AB
#define GL_MULTISAMPLE_BIT_ARB 0x20000000
#define GL_TEXTURE_2D_MULTISAMPLE 0x9100
#define GL_COLOR_SUM_ARB 0x8458
#define GL_VERTEX_PROGRAM_ARB 0x8620
@ -1181,6 +1182,7 @@ APIENTRY_LINKAGE void GL_FUNCTION( glTexGeni )(GLenum coord, GLenum pname, GLint
APIENTRY_LINKAGE void GL_FUNCTION( glTexGeniv )(GLenum coord, GLenum pname, const GLint *params);
APIENTRY_LINKAGE void GL_FUNCTION( glTexImage1D )(GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
APIENTRY_LINKAGE void GL_FUNCTION( glTexImage2D )(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
APIENTRY_LINKAGE void GL_FUNCTION( glTexImage2DMultisample )(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
APIENTRY_LINKAGE void GL_FUNCTION( glTexParameterf )(GLenum target, GLenum pname, GLfloat param);
APIENTRY_LINKAGE void GL_FUNCTION( glTexParameterfv )(GLenum target, GLenum pname, const GLfloat *params);
APIENTRY_LINKAGE void GL_FUNCTION( glTexParameteri )(GLenum target, GLenum pname, GLint param);

31
ref_gl/gl_image.c
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@ -49,6 +49,8 @@ static const char *GL_TargetToString( GLenum target )
return "1D";
case GL_TEXTURE_2D:
return "2D";
case GL_TEXTURE_2D_MULTISAMPLE:
return "2D Multisample";
case GL_TEXTURE_3D:
return "3D";
case GL_TEXTURE_CUBE_MAP_ARB:
@ -117,6 +119,10 @@ void GL_ApplyTextureParams( gl_texture_t *tex )
Assert( tex != NULL );
// multisample textures does not support any sampling state changing
if( FBitSet( tex->flags, TF_MULTISAMPLE ))
return;
// set texture filter
if( FBitSet( tex->flags, TF_DEPTHMAP ))
{
@ -523,6 +529,7 @@ static void GL_SetTextureDimensions( gl_texture_t *tex, int width, int height, i
{
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_MULTISAMPLE:
maxTextureSize = glConfig.max_2d_texture_size;
break;
case GL_TEXTURE_2D_ARRAY_EXT:
@ -626,6 +633,8 @@ static void GL_SetTextureTarget( gl_texture_t *tex, rgbdata_t *pic )
tex->target = GL_TEXTURE_3D;
else if( FBitSet( tex->flags, TF_RECTANGLE ))
tex->target = GL_TEXTURE_RECTANGLE_EXT;
else if( FBitSet(tex->flags, TF_MULTISAMPLE ))
tex->target = GL_TEXTURE_2D_MULTISAMPLE;
else tex->target = GL_TEXTURE_2D; // default case
// check for hardware support
@ -648,6 +657,9 @@ static void GL_SetTextureTarget( gl_texture_t *tex, rgbdata_t *pic )
// depth cubemaps only allowed when GL_EXT_gpu_shader4 is supported
if( tex->target == GL_TEXTURE_CUBE_MAP_ARB && !GL_Support( GL_EXT_GPU_SHADER4 ) && FBitSet( tex->flags, TF_DEPTHMAP ))
tex->target = GL_NONE;
if(( tex->target == GL_TEXTURE_2D_MULTISAMPLE ) && !GL_Support( GL_TEXTURE_MULTISAMPLE ))
tex->target = GL_NONE;
}
/*
@ -1006,6 +1018,7 @@ static void GL_TextureImageRAW( gl_texture_t *tex, GLint side, GLint level, GLin
qboolean subImage = FBitSet( tex->flags, TF_IMG_UPLOADED );
GLenum inFormat = gEngfuncs.Image_GetPFDesc(type)->glFormat;
GLint dataType = GL_UNSIGNED_BYTE;
GLsizei samplesCount = 0;
Assert( tex != NULL );
@ -1032,6 +1045,21 @@ static void GL_TextureImageRAW( gl_texture_t *tex, GLint side, GLint level, GLin
if( subImage ) pglTexSubImage3D( tex->target, level, 0, 0, 0, width, height, depth, inFormat, dataType, data );
else pglTexImage3D( tex->target, level, tex->format, width, height, depth, 0, inFormat, dataType, data );
}
else if( tex->target == GL_TEXTURE_2D_MULTISAMPLE )
{
samplesCount = (GLsizei)gEngfuncs.pfnGetCvarFloat("gl_msaa_samples");
switch (samplesCount)
{
case 2:
case 4:
case 8:
case 16:
break;
default:
samplesCount = 1;
}
pglTexImage2DMultisample( tex->target, samplesCount, tex->format, width, height, GL_TRUE );
}
else // 2D or RECT
{
if( subImage ) pglTexSubImage2D( tex->target, level, 0, 0, width, height, inFormat, dataType, data );
@ -2165,6 +2193,9 @@ void R_TextureList_f( void )
case GL_TEXTURE_2D_ARRAY_EXT:
gEngfuncs.Con_Printf( "ARRAY " );
break;
case GL_TEXTURE_2D_MULTISAMPLE:
gEngfuncs.Con_Printf( "MSAA ");
break;
default:
gEngfuncs.Con_Printf( "???? " );
break;

1
ref_gl/gl_local.h
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@ -622,6 +622,7 @@ enum
GL_DEBUG_OUTPUT,
GL_ARB_VERTEX_BUFFER_OBJECT_EXT,
GL_DRAW_RANGEELEMENTS_EXT,
GL_TEXTURE_MULTISAMPLE,
GL_EXTCOUNT, // must be last
};

7
ref_gl/gl_opengl.c
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@ -249,6 +249,12 @@ static dllfunc_t vbofuncs[] =
{ NULL, NULL }
};
static dllfunc_t multisampletexfuncs[] =
{
{ GL_CALL(glTexImage2DMultisample) },
{ NULL, NULL }
};
static dllfunc_t drawrangeelementsfuncs[] =
{
{ GL_CALL( glDrawRangeElements ) },
@ -714,6 +720,7 @@ void GL_InitExtensionsBigGL( void )
GL_CheckExtension( "GL_ARB_depth_buffer_float", NULL, "gl_texture_depth_float", GL_ARB_DEPTH_FLOAT_EXT );
GL_CheckExtension( "GL_EXT_gpu_shader4", NULL, NULL, GL_EXT_GPU_SHADER4 ); // don't confuse users
GL_CheckExtension( "GL_ARB_vertex_buffer_object", vbofuncs, "gl_vertex_buffer_object", GL_ARB_VERTEX_BUFFER_OBJECT_EXT );
GL_CheckExtension( "GL_ARB_texture_multisample", multisampletexfuncs, "gl_texture_multisample", GL_TEXTURE_MULTISAMPLE );
if( GL_CheckExtension( "GL_ARB_shading_language_100", NULL, NULL, GL_SHADER_GLSL100_EXT ))
{
pglGetIntegerv( GL_MAX_TEXTURE_COORDS_ARB, &glConfig.max_texture_coords );