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Clear up random register writes in array/element/immediate drawing

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This commit is contained in:
fincs 2015-12-05 14:26:21 +01:00
parent 959f250f4e
commit 413cfe004f
3 changed files with 42 additions and 30 deletions
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25
source/drawArrays.c
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@ -6,21 +6,26 @@ void C3D_DrawArrays(GPU_Primitive_t primitive, int first, int size)
// Set primitive type
GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 2, primitive);
GPUCMD_AddMaskedWrite(GPUREG_RESTART_PRIMITIVE, 2, 0x00000001);
// The index buffer is not used, but 0x000F0227 is still required
// Start a new primitive (breaks off a triangle strip/fan)
GPUCMD_AddWrite(GPUREG_RESTART_PRIMITIVE, 1);
// The index buffer is not used, but this command is still required
GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, 0x80000000);
// Number of vertices
GPUCMD_AddWrite(GPUREG_NUMVERTICES, size);
// First vertex
GPUCMD_AddWrite(GPUREG_VERTEX_OFFSET, first);
// Unknown commands
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 1, 0x00000001);
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000000);
GPUCMD_AddWrite(GPUREG_DRAWARRAYS, 0x00000001);
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000001);
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 0x00000001);
// Enable array drawing mode
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 3, 0x001);
// Enable drawing mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0);
// Trigger array drawing
GPUCMD_AddWrite(GPUREG_DRAWARRAYS, 1);
// Go back to configuration mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 1);
// Disable array drawing mode
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 1, 0);
// Clear the post-vertex cache
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 1);
C3Di_GetContext()->flags |= C3DiF_DrawUsed;
}

23
source/drawElements.c
View File

@ -11,22 +11,25 @@ void C3D_DrawElements(GPU_Primitive_t primitive, int count, int type, const void
// Set primitive type
GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 2, primitive);
GPUCMD_AddMaskedWrite(GPUREG_RESTART_PRIMITIVE, 2, 0x00000001);
// Start a new primitive (breaks off a triangle strip/fan)
GPUCMD_AddWrite(GPUREG_RESTART_PRIMITIVE, 1);
// Configure the index buffer
GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, (pa - base) | (type << 31));
// Number of vertices
GPUCMD_AddWrite(GPUREG_NUMVERTICES, count);
// First vertex
GPUCMD_AddWrite(GPUREG_VERTEX_OFFSET, 0);
// Unknown commands
//GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG, 2, 0x00000100);
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 2, 0x00000100);
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000000);
GPUCMD_AddWrite(GPUREG_DRAWELEMENTS, 0x00000001);
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000001);
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 0x00000001);
// Disable "triangles" mode (otherwise stuff breaks)
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG, 2, 0x000);
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 3, 0x000);
// Enable drawing mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0);
// Trigger element drawing
GPUCMD_AddWrite(GPUREG_DRAWELEMENTS, 1);
// Go back to configuration mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 1);
// Clear the post-vertex cache
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 1);
C3Di_GetContext()->flags |= C3DiF_DrawUsed;
}

24
source/immediate.c
View File

@ -4,16 +4,16 @@ void C3D_ImmDrawBegin(GPU_Primitive_t primitive)
{
C3Di_UpdateContext();
// Set primitive type & restart the primitive
// Set primitive type
GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 2, primitive);
GPUCMD_AddMaskedWrite(GPUREG_RESTART_PRIMITIVE, 2, 0x00000001);
// Not sure if GPUREG_INDEXBUFFER_CONFIG is necessary
// Start a new primitive (breaks off a triangle strip/fan)
GPUCMD_AddWrite(GPUREG_RESTART_PRIMITIVE, 1);
// Not sure if this command is necessary
GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, 0x80000000);
// Unknown commands
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 1, 0x00000001);
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000000);
// Enable submitting vertex data
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 3, 0x001);
// Enable drawing mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0);
// Begin immediate-mode vertex submission
GPUCMD_AddWrite(GPUREG_FIXEDATTRIB_INDEX, 0xF);
}
@ -56,8 +56,12 @@ void C3D_ImmSendAttrib(float x, float y, float z, float w)
void C3D_ImmDrawEnd(void)
{
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 0x00000001);
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 0x00000001);
// Go back to configuration mode
GPUCMD_AddMaskedWrite(GPUREG_START_DRAW_FUNC0, 1, 1);
// Disable array drawing mode
GPUCMD_AddMaskedWrite(GPUREG_GEOSTAGE_CONFIG2, 1, 0);
// Clear the post-vertex cache
GPUCMD_AddWrite(GPUREG_VTX_FUNC, 1);
C3Di_GetContext()->flags |= C3DiF_DrawUsed;
}