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LibGL+LibSoftGPU: Implement fixed pipeline support for GL_COMBINE
`GL_COMBINE` is basically a fixed function calculator to perform simple arithmetics on configurable fragment sources. This patch implements a number of texture env parameters with support for the RGBA internal format.
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10 changed files with 461 additions and 58 deletions
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@ -144,6 +144,7 @@ extern "C" {
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#define GL_MAP2_VERTEX_4 0x0DB8
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#define GL_NORMAL_ARRAY 0x8075
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#define GL_NORMAL_ARRAY_TYPE 0x807E
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#define GL_MAX_TEXTURE_LOD_BIAS 0x84FD
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// Blend factors
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#define GL_ZERO 0
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@ -485,6 +486,8 @@ extern "C" {
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#define GL_Q 0x2003
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// Texture Environment and Parameters
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#define GL_ADD 0x0104
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#define GL_ALPHA_SCALE 0x0D1C
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#define GL_MODULATE 0x2100
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#define GL_TEXTURE_ENV_MODE 0x2200
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#define GL_DECAL 0x2101
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@ -501,9 +504,41 @@ extern "C" {
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#define GL_TEXTURE_WRAP_T 0x2803
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#define GL_CLAMP 0x2900
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#define GL_REPEAT 0x2901
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#define GL_MIRRORED_REPEAT 0x8370
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#define GL_CLAMP_TO_BORDER 0x812D
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#define GL_CLAMP_TO_EDGE 0x812F
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#define GL_MIRRORED_REPEAT 0x8370
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#define GL_SUBTRACT 0x84E7
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#define GL_TEXTURE_FILTER_CONTROL 0x8500
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#define GL_TEXTURE_LOD_BIAS 0x8501
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#define GL_COMBINE 0x8570
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#define GL_COMBINE_RGB 0x8571
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#define GL_COMBINE_ALPHA 0x8572
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#define GL_RGB_SCALE 0x8573
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#define GL_ADD_SIGNED 0x8574
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#define GL_INTERPOLATE 0x8575
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#define GL_CONSTANT 0x8576
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#define GL_PRIMARY_COLOR 0x8577
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#define GL_PREVIOUS 0x8578
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#define GL_SRC0_RGB 0x8580
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#define GL_SOURCE0_RGB 0x8580
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#define GL_SRC1_RGB 0x8581
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#define GL_SOURCE1_RGB 0x8581
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#define GL_SRC2_RGB 0x8582
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#define GL_SOURCE2_RGB 0x8582
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#define GL_SRC0_ALPHA 0x8588
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#define GL_SOURCE0_ALPHA 0x8588
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#define GL_SRC1_ALPHA 0x8589
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#define GL_SOURCE1_ALPHA 0x8589
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#define GL_SRC2_ALPHA 0x858A
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#define GL_SOURCE2_ALPHA 0x858A
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#define GL_OPERAND0_RGB 0x8590
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#define GL_OPERAND1_RGB 0x8591
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#define GL_OPERAND2_RGB 0x8592
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#define GL_OPERAND0_ALPHA 0x8598
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#define GL_OPERAND1_ALPHA 0x8599
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#define GL_OPERAND2_ALPHA 0x859A
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#define GL_DOT3_RGB 0x86AE
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#define GL_DOT3_RGBA 0x86AF
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// Texture gen modes
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#define GL_EYE_LINEAR 0x2400
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@ -538,8 +573,6 @@ extern "C" {
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#define GL_MODELVIEW_MATRIX 0x0BA6
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#define GL_PROJECTION_MATRIX 0x0BA7
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#define GL_ADD 0x0104
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// User clipping planes
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#define GL_MAX_CLIP_PLANES 0x0D32
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#define GL_CLIP_PLANE0 0x3000
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