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LibGL: Implement glAlphaFunc()

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This implements glAlphaFunc() for setting alpha test func and ref value
and also allows enabling and disabling GL_ALPHA_TEST
This commit is contained in:
Stephan Unverwerth 2021-05-16 16:43:09 +02:00 • committed by Andreas Kling
parent b8b8b4b566
commit 1bd754882d
6 changed files with 68 additions and 2 deletions
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20
Userland/Libraries/LibGL/GL/gl.h
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@ -29,6 +29,16 @@ extern "C" {
#define GL_TRIANGLE_STRIP 0x0103
#define GL_POLYGON 0x0104
// Depth buffer and alpha test compare functions
#define GL_NEVER 0x0200
#define GL_LESS 0x0201
#define GL_EQUAL 0x0202
#define GL_LEQUAL 0x0203
#define GL_GREATER 0x0204
#define GL_NOTEQUAL 0x0205
#define GL_GEQUAL 0x0206
#define GL_ALWAYS 0x0207
// Buffer bits
#define GL_COLOR_BUFFER_BIT 0x0200
#define GL_DEPTH_BUFFER_BIT 0x0400
@ -36,6 +46,13 @@ extern "C" {
// Enable capabilities
#define GL_CULL_FACE 0x0B44
#define GL_DEPTH_TEST 0x0B71
// Alpha testing
#define GL_ALPHA_TEST 0x0BC0
#define GL_ALPHA_TEST_REF 0x0BC2
#define GL_ALPHA_TEST_FUNC 0x0BC1
// Alpha blending
#define GL_BLEND 0x0BE2
// Utility
@ -43,7 +60,7 @@ extern "C" {
#define GL_RENDERER 0x1F01
#define GL_VERSION 0x1F02
/* Blend factors */
// Blend factors
#define GL_ZERO 0
#define GL_ONE 1
#define GL_SRC_COLOR 0x0300
@ -152,6 +169,7 @@ GLAPI void glFlush();
GLAPI void glFinish();
GLAPI void glBlendFunc(GLenum sfactor, GLenum dfactor);
GLAPI void glShadeModel(GLenum mode);
GLAPI void glAlphaFunc(GLenum func, GLclampf ref);
#ifdef __cplusplus
}