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Implement glAlphaFunc and glEnable(GL_ALPHA_TEST)

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This commit is contained in:
Luke Benstead 2019-03-10 17:53:58 +00:00
parent 25bd3aedc8
commit 04dab8da9a
3 changed files with 31 additions and 2 deletions
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2
GL/flush.c
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@ -55,6 +55,8 @@ static void _glInitPVR() {
PolyList* _glActivePolyList() {
if(_glIsBlendingEnabled()) {
return &TR_LIST;
} else if(_glIsAlphaTestEnabled()) {
return &PT_LIST;
} else {
return &OP_LIST;
}

2
GL/private.h
View File

@ -152,6 +152,8 @@ GLboolean _glIsSharedTexturePaletteEnabled();
void _glApplyColorTable(TexturePalette *palette);
GLboolean _glIsBlendingEnabled();
GLboolean _glIsAlphaTestEnabled();
GLboolean _glIsMipmapComplete(const TextureObject* obj);
GLubyte* _glGetMipmapLocation(TextureObject* obj, GLuint level);
GLuint _glGetMipmapLevelCount(TextureObject* obj);

29
GL/state.c
View File

@ -30,6 +30,9 @@ static GLboolean COLOR_MATERIAL_ENABLED = GL_FALSE;
/* Is the shared texture palette enabled? */
static GLboolean SHARED_PALETTE_ENABLED = GL_FALSE;
static GLboolean ALPHA_TEST_ENABLED = GL_FALSE;
GLboolean _glIsSharedTexturePaletteEnabled() {
return SHARED_PALETTE_ENABLED;
}
@ -84,6 +87,10 @@ GLboolean _glIsBlendingEnabled() {
return BLEND_ENABLED;
}
GLboolean _glIsAlphaTestEnabled() {
return ALPHA_TEST_ENABLED;
}
static int _calcPVRBlendFactor(GLenum factor) {
switch(factor) {
case GL_ZERO:
@ -311,6 +318,9 @@ GLAPI void APIENTRY glEnable(GLenum cap) {
SHARED_PALETTE_ENABLED = GL_TRUE;
}
break;
case GL_ALPHA_TEST: {
ALPHA_TEST_ENABLED = GL_TRUE;
} break;
case GL_LIGHT0:
case GL_LIGHT1:
case GL_LIGHT2:
@ -362,6 +372,9 @@ GLAPI void APIENTRY glDisable(GLenum cap) {
SHARED_PALETTE_ENABLED = GL_FALSE;
}
break;
case GL_ALPHA_TEST: {
ALPHA_TEST_ENABLED = GL_FALSE;
} break;
case GL_LIGHT0:
case GL_LIGHT1:
case GL_LIGHT2:
@ -457,8 +470,20 @@ GLAPI void APIENTRY glBlendFunc(GLenum sfactor, GLenum dfactor) {
_updatePVRBlend(&GL_CONTEXT);
}
void glAlphaFunc(GLenum func, GLclampf ref) {
;
#define PT_ALPHA_REF 0x011c
GLAPI void APIENTRY glAlphaFunc(GLenum func, GLclampf ref) {
GLenum validFuncs[] = {
GL_GREATER,
0
};
if(_glCheckValidEnum(func, validFuncs, __func__) != 0) {
return;
}
GLubyte val = (GLubyte)(ref * 255.0f);
PVR_SET(PT_ALPHA_REF, val);
}
void glLineWidth(GLfloat width) {