// topscreen
void renderFrame()
{
GPU_SetViewport((u32*)osConvertVirtToPhys((u32)gpuDOut),(u32*)osConvertVirtToPhys((u32)gpuOut),0,0,240*2,400);
GPU_DepthRange(-1.0f, 0.0f);
GPU_SetFaceCulling(GPU_CULL_BACK_CCW);
GPU_SetStencilTest(false, GPU_ALWAYS, 0x00, 0xFF, 0x00);
GPU_SetStencilOp(GPU_KEEP, GPU_KEEP, GPU_KEEP);
GPU_SetBlendingColor(0,0,0,0);
GPU_SetDepthTestAndWriteMask(true, GPU_GREATER, GPU_WRITE_ALL);
GPUCMD_AddSingleParam(0x00010062, 0);
GPUCMD_AddSingleParam(0x000F0118, 0);
//setup shader
SHDR_UseProgram(shader, 0);
GPU_SetAlphaBlending(GPU_BLEND_ADD, GPU_BLEND_ADD, GPU_SRC_ALPHA, GPU_ONE_MINUS_SRC_ALPHA, GPU_SRC_ALPHA, GPU_ONE_MINUS_SRC_ALPHA);
GPU_SetAlphaTest(false, GPU_ALWAYS, 0x00);
GPU_SetTextureEnable(GPU_TEXUNIT0);
GPU_SetTexEnv(0,
GPU_TEVSOURCES(GPU_TEXTURE0, GPU_PRIMARY_COLOR, GPU_PRIMARY_COLOR),
GPU_TEVSOURCES(GPU_TEXTURE0, GPU_PRIMARY_COLOR, GPU_PRIMARY_COLOR),
GPU_TEVOPERANDS(0,0,0),
GPU_TEVOPERANDS(0,0,0),
GPU_MODULATE, GPU_MODULATE,
0xFFFFFFFF);
GPU_SetDummyTexEnv(1);
GPU_SetDummyTexEnv(2);
GPU_SetDummyTexEnv(3);
GPU_SetDummyTexEnv(4);
GPU_SetDummyTexEnv(5);
//texturing stuff
GPU_SetTexture(GPU_TEXUNIT0, (u32*)osConvertVirtToPhys((u32)texData),128,128,GPU_TEXTURE_MAG_FILTER(GPU_NEAREST)|GPU_TEXTURE_MIN_FILTER(GPU_NEAREST),GPU_RGBA8);
GPU_SetAttributeBuffers(3, (u32*)osConvertVirtToPhys((u32)texData),
GPU_ATTRIBFMT(0, 3, GPU_FLOAT)|GPU_ATTRIBFMT(1, 2, GPU_FLOAT)|GPU_ATTRIBFMT(2, 3, GPU_FLOAT),
0xFFC, 0x210, 1, (u32[]){0x00000000}, (u64[]){0x210}, (u8[]){3});
//setup lighting (this is specific to our shader)
vect3Df_s lightDir=vnormf(vect3Df(cos(lightAngle), -1.0f, sin(lightAngle)));
GPU_SetUniform(SHDR_GetUniformRegister(shader, "lightDirection", 0), (u32*)(float[]){0.0f, -lightDir.z, -lightDir.y, -lightDir.x}, 1);
void RenderTopScreen()
{
// notes on the drawing process
// GPU hangs if we attempt to draw an even number of arrays :/ which is why we draw the border 'twice'
// textures used here are actually 512x256. TODO: investigate if GPU_SetTexture() really has the params in the wrong order
// or if we did something wrong.
//general setup
GPU_SetViewport((u32*)osConvertVirtToPhys((u32)gpuDOut),(u32*)osConvertVirtToPhys((u32)gpuOut),0,0,240*2,400);
GPU_DepthRange(-1.0f, 0.0f);
GPU_SetFaceCulling(GPU_CULL_BACK_CCW);
GPU_SetStencilTest(false, GPU_ALWAYS, 0x00);
GPU_SetDepthTest(false, GPU_ALWAYS, 0x1F);
// ?
GPUCMD_AddSingleParam(0x00010062, 0x00000000); //param always 0x0 according to code
GPUCMD_AddSingleParam(0x000F0118, 0x00000000);
//setup shader
SHDR_UseProgram(shader, 0);
//?
GPUCMD_AddSingleParam(0x000F0100, 0x00E40100);
GPUCMD_AddSingleParam(0x000F0101, 0x01010000);
GPUCMD_AddSingleParam(0x000F0104, 0x00000010);
//texturing stuff
GPUCMD_AddSingleParam(0x0002006F, 0x00000100);
GPUCMD_AddSingleParam(0x000F0080, 0x00011001); //enables/disables texturing
//texenv
GPU_SetTexEnv(0,
GPU_TEVSOURCES(GPU_TEXTURE0, 0, 0),
GPU_TEVSOURCES(GPU_CONSTANT, 0, 0),
GPU_TEVOPERANDS(0,0,0),
GPU_TEVOPERANDS(0,0,0),
GPU_REPLACE, GPU_REPLACE,
0xFFFFFFFF);
GPU_SetDummyTexEnv(1);
GPU_SetDummyTexEnv(2);
GPU_SetDummyTexEnv(3);
GPU_SetDummyTexEnv(4);
GPU_SetDummyTexEnv(5);
//texturing stuff
GPU_SetTexture((u32*)osConvertVirtToPhys((u32)BorderTex),256,512,0,GPU_RGBA8); // texture is actually 512x256
//setup matrices
setUniformMatrix(0x24, mvMatrix);
setUniformMatrix(0x20, projMatrix);
// border
GPU_SetAttributeBuffers(2, (u32*)osConvertVirtToPhys((u32)borderVertices),
GPU_ATTRIBFMT(0, 3, GPU_FLOAT)|GPU_ATTRIBFMT(1, 2, GPU_FLOAT),
0xFFC, 0x10, 1, (u32[]){0x00000000}, (u64[]){0x10}, (u8[]){2});
GPU_DrawArray(GPU_TRIANGLES, 3);
GPU_DrawArray(GPU_TRIANGLES, 2*3);
GPU_DepthRange(-1.0f, 0.0f);
GPU_SetFaceCulling(GPU_CULL_BACK_CCW);
GPU_SetStencilTest(false, GPU_ALWAYS, 0x00);
GPU_SetDepthTest(false, GPU_ALWAYS, 0x1F);
GPUCMD_AddSingleParam(0x00010062, 0x00000000);
GPUCMD_AddSingleParam(0x000F0118, 0x00000000);
GPUCMD_AddSingleParam(0x000F0100, 0x00000100);
GPUCMD_AddSingleParam(0x000F0101, 0x01010000);
GPUCMD_AddSingleParam(0x000F0104, 0x00000010);
//texturing stuff
GPUCMD_AddSingleParam(0x0002006F, 0x00000700); // enables/disables texcoord output
GPUCMD_AddSingleParam(0x000F0080, 0x00011007); //enables/disables texturing
// TEXTURE ENV STAGES
// ---
// blending operation: (Main.Color +- (Sub.Color * Main.Alpha)) * Sub.Alpha
// Main.Alpha = 0/255 depending on color math
// Sub.Alpha = 128/255 depending on color div2
// note: the main/sub intensities are halved to prevent overflow during the operations.
// (each TEV stage output is clamped to [0,255])
// stage 4 makes up for this
// ---
// STAGE 1: Out.Color = Sub.Color * Main.Alpha, Out.Alpha = Sub.Alpha + (1-Main.Alpha) (cancel out div2 when color math doesn't happen)
GPU_SetTexEnv(0,
GPU_TEVSOURCES(GPU_TEXTURE1, GPU_TEXTURE0, 0),
GPU_TEVSOURCES(GPU_TEXTURE1, GPU_TEXTURE0, 0),
GPU_TEVOPERANDS(0,2,0),
GPU_TEVOPERANDS(0,1,0),
GPU_MODULATE,
GPU_ADD,
0xFFFFFFFF);
// STAGE 2: Out.Color = Main.Color +- Prev.Color, Out.Alpha = Prev.Alpha
GPU_SetTexEnv(1,
GPU_TEVSOURCES(GPU_TEXTURE0, GPU_PREVIOUS, 0),
GPU_TEVSOURCES(GPU_PREVIOUS, 0, 0),
GPU_TEVOPERANDS(0,0,0),
GPU_TEVOPERANDS(0,0,0),
(PPU_ColorMath & 0x80) ? GPU_SUBTRACT:GPU_ADD,
GPU_REPLACE,
0xFFFFFFFF);
// STAGE 3: Out.Color = Prev.Color * Prev.Alpha, Out.Alpha = Prev.Alpha
GPU_SetTexEnv(2,
GPU_TEVSOURCES(GPU_PREVIOUS, GPU_PREVIOUS, 0),
GPU_TEVSOURCES(GPU_PREVIOUS, 0, 0),
GPU_TEVOPERANDS(0,2,0),
GPU_TEVOPERANDS(0,0,0),
GPU_MODULATE,
GPU_REPLACE,
0xFFFFFFFF);
// STAGE 4: Out.Color = Prev.Color + Prev.Color (doubling color intensity), Out.Alpha = Const.Alpha
GPU_SetTexEnv(3,
GPU_TEVSOURCES(GPU_PREVIOUS, GPU_PREVIOUS, 0),
GPU_TEVSOURCES(GPU_CONSTANT, 0, 0),
GPU_TEVOPERANDS(0,0,0),
GPU_TEVOPERANDS(0,0,0),
GPU_ADD,
GPU_REPLACE,
0xFFFFFFFF);
// STAGE 5: master brightness - Out.Color = Prev.Color * Bright.Alpha, Out.Alpha = Const.Alpha
GPU_SetTexEnv(4,
GPU_TEVSOURCES(GPU_PREVIOUS, GPU_TEXTURE2, 0),
GPU_TEVSOURCES(GPU_CONSTANT, 0, 0),
GPU_TEVOPERANDS(0,2,0),
GPU_TEVOPERANDS(0,0,0),
GPU_MODULATE,
GPU_REPLACE,
0xFFFFFFFF);
// STAGE 6: dummy
GPU_SetDummyTexEnv(5);
GPU_SetAttributeBuffers(3, (u32*)osConvertVirtToPhys((u32)screenVertices),
GPU_ATTRIBFMT(0, 3, GPU_FLOAT)|GPU_ATTRIBFMT(1, 2, GPU_FLOAT)|GPU_ATTRIBFMT(2, 2, GPU_FLOAT),
0xFFC, 0x210, 1, (u32[]){0x00000000}, (u64[]){0x210}, (u8[]){3});
GPU_SetTexture((u32*)osConvertVirtToPhys((u32)MainScreenTex),256,512,0,GPU_RGBA8);
GPU_SetTexture1((u32*)osConvertVirtToPhys((u32)SubScreenTex),256,512,0,GPU_RGBA8);
GPU_SetTexture2((u32*)osConvertVirtToPhys((u32)BrightnessTex),256,8,0x200,GPU_A8);
GPU_DrawArray(GPU_TRIANGLES, 2*3);
}
