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gsdx-ogl: reduce complexity of clear texture 

Null is equivalent to a clear to 0.

Note: Code is not yet used because both stencil and depth are cleared.
Future note: stencil can potentially be replaced by load_store_image
This commit is contained in:
Gregory Hainaut 2014-10-24 20:46:34 +02:00
parent bd9df9a6ec
commit e62af05496
2 changed files with 4 additions and 13 deletions
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16
plugins/GSdx/GSDeviceOGL.cpp
View File

@ -519,17 +519,8 @@ void GSDeviceOGL::ClearDepth(GSTexture* t, float c)
// It can't be used here because it will clear both depth and stencil
if (0 && GLLoader::found_GL_ARB_clear_texture) {
#ifndef ENABLE_GLES
static_cast<GSTextureOGL*>(t)->EnableUnit();
// Yes a very nice API to mix float and integer
struct clear {
float depth;
GLuint stencil;
} clear;
clear.depth = c;
clear.stencil = 0;
gl_ClearTexImage(static_cast<GSTextureOGL*>(t)->GetID(), 0, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, &clear);
ASSERT(c == 0.0f);
gl_ClearTexImage(static_cast<GSTextureOGL*>(t)->GetID(), GL_TEX_LEVEL_0, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, NULL);
#endif
} else {
OMSetFBO(m_fbo);
@ -553,7 +544,8 @@ void GSDeviceOGL::ClearStencil(GSTexture* t, uint8 c)
// It can't be used here because it will clear both depth and stencil
if (0 && GLLoader::found_GL_ARB_clear_texture) {
#ifndef ENABLE_GLES
gl_ClearTexImage(static_cast<GSTextureOGL*>(t)->GetID(), GL_TEX_LEVEL_0, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, &c);
ASSERT(c == 0);
gl_ClearTexImage(static_cast<GSTextureOGL*>(t)->GetID(), GL_TEX_LEVEL_0, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, NULL);
#endif
} else {
OMSetFBO(m_fbo);

1
plugins/GSdx/GSTextureOGL.cpp
View File

@ -322,7 +322,6 @@ GSTextureOGL::~GSTextureOGL()
void GSTextureOGL::Clear(const void *data)
{
#ifndef ENABLE_GLES
EnableUnit();
gl_ClearTexImage(m_texture_id, 0, m_int_format, m_int_type, data);
#endif
}