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GPU: Clarify display transfer code.

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Also makes the illogical component order more obvious.
This commit is contained in:
Tony Wasserka 2014-07-22 13:29:25 +02:00
parent 61e2ffd448
commit 2eb61dafc0
1 changed files with 15 additions and 12 deletions
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27
src/core/hw/gpu.cpp
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@ -157,17 +157,19 @@ inline void Write(u32 addr, const T data) {
for (int y = 0; y < config.output_height; ++y) {
// TODO: Why does the register seem to hold twice the framebuffer width?
for (int x = 0; x < config.output_width / 2; ++x) {
int source[4] = { 0, 0, 0, 0}; // rgba;
struct {
int r, g, b, a;
} source_color = { 0, 0, 0, 0 };
switch (config.input_format) {
case Regs::FramebufferFormat::RGBA8:
{
// TODO: Most likely got the component order messed up.
u8* srcptr = source_pointer + x * 4 + y * config.input_width * 4 / 2;
source[0] = srcptr[0]; // blue
source[1] = srcptr[1]; // green
source[2] = srcptr[2]; // red
source[3] = srcptr[3]; // alpha
source_color.r = srcptr[0]; // blue
source_color.g = srcptr[1]; // green
source_color.b = srcptr[2]; // red
source_color.a = srcptr[3]; // alpha
break;
}
@ -181,19 +183,20 @@ inline void Write(u32 addr, const T data) {
{
// TODO: Untested
u8* dstptr = (u32*)(dest_pointer + x * 4 + y * config.output_width * 4);
dstptr[0] = source[0];
dstptr[1] = source[1];
dstptr[2] = source[2];
dstptr[3] = source[3];
dstptr[0] = source_color.r;
dstptr[1] = source_color.g;
dstptr[2] = source_color.b;
dstptr[3] = source_color.a;
break;
}*/
case Regs::FramebufferFormat::RGB8:
{
// TODO: Most likely got the component order messed up.
u8* dstptr = dest_pointer + x * 3 + y * config.output_width * 3 / 2;
dstptr[0] = source[0]; // blue
dstptr[1] = source[1]; // green
dstptr[2] = source[2]; // red
dstptr[0] = source_color.r; // blue
dstptr[1] = source_color.g; // green
dstptr[2] = source_color.b; // red
break;
}