diff options
Diffstat (limited to 'src/mesa/state_tracker/st_format.c')
| -rw-r--r-- | src/mesa/state_tracker/st_format.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c index 9e2d60c926..b243c249e3 100644 --- a/src/mesa/state_tracker/st_format.c +++ b/src/mesa/state_tracker/st_format.c @@ -392,7 +392,7 @@ default_depth_format(struct pipe_screen *screen, * or PIPE_TEXTURE_USAGE_SAMPLER */ enum pipe_format -st_choose_format(struct pipe_context *pipe, GLint internalFormat, +st_choose_format(struct pipe_context *pipe, GLenum internalFormat, enum pipe_texture_target target, unsigned tex_usage) { struct pipe_screen *screen = pipe->screen; @@ -594,9 +594,13 @@ st_choose_format(struct pipe_context *pipe, GLint internalFormat, static GLboolean -is_stencil_format(GLenum format) +is_depth_or_stencil_format(GLenum internalFormat) { - switch (format) { + switch (internalFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: case GL_STENCIL_INDEX: case GL_STENCIL_INDEX1_EXT: case GL_STENCIL_INDEX4_EXT: @@ -614,10 +618,10 @@ is_stencil_format(GLenum format) * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces. */ enum pipe_format -st_choose_renderbuffer_format(struct pipe_context *pipe, GLint internalFormat) +st_choose_renderbuffer_format(struct pipe_context *pipe, GLenum internalFormat) { uint usage; - if (is_stencil_format(internalFormat)) + if (is_depth_or_stencil_format(internalFormat)) usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL; else usage = PIPE_TEXTURE_USAGE_RENDER_TARGET; @@ -716,3 +720,23 @@ st_ChooseTextureFormat(GLcontext *ctx, GLint internalFormat, return translate_gallium_format_to_mesa_format(pFormat); } + + +/** + * Test if a gallium format is equivalent to a GL format/type. + */ +GLboolean +st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type) +{ + switch (pFormat) { + case PIPE_FORMAT_R8G8B8A8_UNORM: + return format == GL_RGBA && type == GL_UNSIGNED_BYTE; + case PIPE_FORMAT_B8G8R8A8_UNORM: + return format == GL_BGRA && type == GL_UNSIGNED_BYTE; + case PIPE_FORMAT_R5G6B5_UNORM: + return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5; + /* XXX more combos... */ + default: + return GL_FALSE; + } +} |