ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

GBA Video: Optimize mode 0 offset changes in GL

This commit is contained in:
Vicki Pfau 2019-05-28 17:20:54 -07:00
parent 30e0624751
commit 33d13b3757
2 changed files with 76 additions and 109 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/mgba/internal/gba/renderers/gl.h
View File

@ -45,7 +45,6 @@ struct GBAVideoGLBackground {
GLuint fbo; GLuint fbo;
GLuint tex; GLuint tex;
GLuint flags; GLuint flags;
GLuint scanlineTex;
unsigned index; unsigned index;
int enabled; int enabled;
@ -64,6 +63,9 @@ struct GBAVideoGLBackground {
int32_t refy; int32_t refy;
struct GBAVideoGLAffine affine; struct GBAVideoGLAffine affine;
GLint scanlineAffine[GBA_VIDEO_VERTICAL_PIXELS * 4];
GLint scanlineOffset[GBA_VIDEO_VERTICAL_PIXELS];
}; };
enum { enum {
@ -81,8 +83,6 @@ enum {
GBA_GL_TEX_BACKDROP_COLOR, GBA_GL_TEX_BACKDROP_COLOR,
GBA_GL_TEX_BACKDROP_FLAGS, GBA_GL_TEX_BACKDROP_FLAGS,
GBA_GL_TEX_WINDOW, GBA_GL_TEX_WINDOW,
GBA_GL_TEX_AFFINE_2,
GBA_GL_TEX_AFFINE_3,
GBA_GL_TEX_MAX GBA_GL_TEX_MAX
}; };
@ -140,7 +140,6 @@ struct GBAVideoGLRenderer {
uint32_t* temporaryBuffer; uint32_t* temporaryBuffer;
struct GBAVideoGLBackground bg[4]; struct GBAVideoGLBackground bg[4];
struct GBAVideoGLAffine affine[2][GBA_VIDEO_VERTICAL_PIXELS];
int oamMax; int oamMax;
bool oamDirty; bool oamDirty;

178
src/gba/renderers/gl.c
View File

@ -129,7 +129,7 @@ static const char* const _renderMode0 =
"uniform int screenBase;\n" "uniform int screenBase;\n"
"uniform int charBase;\n" "uniform int charBase;\n"
"uniform int size;\n" "uniform int size;\n"
"uniform ivec2 offset;\n" "uniform int offset[160];\n"
"uniform ivec4 inflags;\n" "uniform ivec4 inflags;\n"
"uniform ivec2 mosaic;\n" "uniform ivec2 mosaic;\n"
"OUT(0) out vec4 color;\n" "OUT(0) out vec4 color;\n"
@ -145,11 +145,17 @@ static const char* const _renderMode0 =
" if (mosaic.y > 1) {\n" " if (mosaic.y > 1) {\n"
" coord.y -= coord.y % mosaic.y;\n" " coord.y -= coord.y % mosaic.y;\n"
" }\n" " }\n"
" coord += offset;\n" " coord += (ivec2(0x3FF, 0x3FF000) & offset[int(texCoord.y)]) >> ivec2(0, 12);\n"
" if (size == 3) {\n"
" coord.y += (coord.y & 256) << 1;\n"
" }\n"
" if (size != 2) {\n"
" coord.y &= ~256;\n"
" }\n"
" if ((size & 1) == 1) {\n" " if ((size & 1) == 1) {\n"
" coord.y += coord.x & 256;\n" " coord.y += coord.x & 256;\n"
" }\n" " }\n"
" coord.x &= 255;\n" " coord &= ivec2(255, 511);\n"
" int mapAddress = screenBase + (coord.x >> 3) + (coord.y >> 3) * 32;\n" " int mapAddress = screenBase + (coord.x >> 3) + (coord.y >> 3) * 32;\n"
" vec4 map = texelFetch(vram, ivec2(mapAddress & 255, mapAddress >> 8), 0);\n" " vec4 map = texelFetch(vram, ivec2(mapAddress & 255, mapAddress >> 8), 0);\n"
" int tileFlags = int(map.g * 15.9);\n" " int tileFlags = int(map.g * 15.9);\n"
@ -208,22 +214,15 @@ static const char* const _interpolate =
"void loadAffine(int y, out ivec2 mat[4], out ivec2 aff[4]) {\n" "void loadAffine(int y, out ivec2 mat[4], out ivec2 aff[4]) {\n"
" int start = max(range.x, y - 3);\n" " int start = max(range.x, y - 3);\n"
" ivec4 splitOffset[4];\n"
" mat[0] = texelFetch(transform, ivec2(0, start), 0).xz;\n" " mat[0] = transform[start + 0].xy;\n"
" mat[1] = texelFetch(transform, ivec2(0, start + 1), 0).xz;\n" " aff[0] = transform[start + 0].zw;\n"
" mat[2] = texelFetch(transform, ivec2(0, start + 2), 0).xz;\n" " mat[1] = transform[start + 1].xy;\n"
" mat[3] = texelFetch(transform, ivec2(0, start + 3), 0).xz;\n" " aff[1] = transform[start + 1].zw;\n"
" mat[2] = transform[start + 2].xy;\n"
" splitOffset[0] = texelFetch(transform, ivec2(1, start + 0), 0);\n" " aff[2] = transform[start + 2].zw;\n"
" splitOffset[1] = texelFetch(transform, ivec2(1, start + 1), 0);\n" " mat[3] = transform[start + 3].xy;\n"
" splitOffset[2] = texelFetch(transform, ivec2(1, start + 2), 0);\n" " aff[3] = transform[start + 3].zw;\n"
" splitOffset[3] = texelFetch(transform, ivec2(1, start + 3), 0);\n"
" aff[0] = (splitOffset[0].xz & 0xFFFF) + (splitOffset[0].yw << 16);\n"
" aff[1] = (splitOffset[1].xz & 0xFFFF) + (splitOffset[1].yw << 16);\n"
" aff[2] = (splitOffset[2].xz & 0xFFFF) + (splitOffset[2].yw << 16);\n"
" aff[3] = (splitOffset[3].xz & 0xFFFF) + (splitOffset[3].yw << 16);\n"
" if (y - 3 < range.x) {\n" " if (y - 3 < range.x) {\n"
" ivec2 tempMat[3];\n" " ivec2 tempMat[3];\n"
@ -273,7 +272,7 @@ static const char* const _renderMode2 =
"uniform int charBase;\n" "uniform int charBase;\n"
"uniform int size;\n" "uniform int size;\n"
"uniform ivec4 inflags;\n" "uniform ivec4 inflags;\n"
"uniform isampler2D transform;\n" "uniform ivec4 transform[160];\n"
"uniform ivec2 range;\n" "uniform ivec2 range;\n"
"uniform ivec2 mosaic;\n" "uniform ivec2 mosaic;\n"
"OUT(0) out vec4 color;\n" "OUT(0) out vec4 color;\n"
@ -339,7 +338,7 @@ static const char* const _renderMode35 =
"uniform int charBase;\n" "uniform int charBase;\n"
"uniform ivec2 size;\n" "uniform ivec2 size;\n"
"uniform ivec4 inflags;\n" "uniform ivec4 inflags;\n"
"uniform isampler2D transform;\n" "uniform ivec4 transform[160];\n"
"uniform ivec2 range;\n" "uniform ivec2 range;\n"
"uniform ivec2 mosaic;\n" "uniform ivec2 mosaic;\n"
"OUT(0) out vec4 color;\n" "OUT(0) out vec4 color;\n"
@ -399,7 +398,7 @@ static const char* const _renderMode4 =
"uniform int charBase;\n" "uniform int charBase;\n"
"uniform ivec2 size;\n" "uniform ivec2 size;\n"
"uniform ivec4 inflags;\n" "uniform ivec4 inflags;\n"
"uniform isampler2D transform;\n" "uniform ivec4 transform[160];\n"
"uniform ivec2 range;\n" "uniform ivec2 range;\n"
"uniform ivec2 mosaic;\n" "uniform ivec2 mosaic;\n"
"OUT(0) out vec4 color;\n" "OUT(0) out vec4 color;\n"
@ -749,19 +748,6 @@ void GBAVideoGLRendererInit(struct GBAVideoRenderer* renderer) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, 256, 192, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 0); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, 256, 192, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 0);
glBindTexture(GL_TEXTURE_2D, glRenderer->layers[GBA_GL_TEX_AFFINE_2]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16I, 2, GBA_VIDEO_VERTICAL_PIXELS, 0, GL_RGBA_INTEGER, GL_SHORT, NULL);
glBindTexture(GL_TEXTURE_2D, glRenderer->layers[GBA_GL_TEX_AFFINE_3]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16I, 2, GBA_VIDEO_VERTICAL_PIXELS, 0, GL_RGBA_INTEGER, GL_SHORT, NULL);
glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_OBJ]); glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_OBJ]);
_initFramebufferTexture(glRenderer->layers[GBA_GL_TEX_OBJ_COLOR], GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale); _initFramebufferTexture(glRenderer->layers[GBA_GL_TEX_OBJ_COLOR], GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale);
_initFramebufferTextureEx(glRenderer->layers[GBA_GL_TEX_OBJ_FLAGS], GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE, GL_COLOR_ATTACHMENT1, glRenderer->scale); _initFramebufferTextureEx(glRenderer->layers[GBA_GL_TEX_OBJ_FLAGS], GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE, GL_COLOR_ATTACHMENT1, glRenderer->scale);
@ -814,8 +800,8 @@ void GBAVideoGLRendererInit(struct GBAVideoRenderer* renderer) {
glBindFramebuffer(GL_FRAMEBUFFER, bg->fbo); glBindFramebuffer(GL_FRAMEBUFFER, bg->fbo);
_initFramebufferTexture(bg->tex, GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale); _initFramebufferTexture(bg->tex, GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale);
_initFramebufferTextureEx(bg->flags, GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE, GL_COLOR_ATTACHMENT1, glRenderer->scale); _initFramebufferTextureEx(bg->flags, GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE, GL_COLOR_ATTACHMENT1, glRenderer->scale);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
} }
glBindFramebuffer(GL_FRAMEBUFFER, 0);
char log[2048]; char log[2048];
const GLchar* shaderBuffer[4]; const GLchar* shaderBuffer[4];
@ -965,15 +951,44 @@ uint16_t GBAVideoGLRendererWriteVideoRegister(struct GBAVideoRenderer* renderer,
dirty = true; dirty = true;
break; break;
case REG_BG0HOFS: case REG_BG0HOFS:
value &= 0x01FF;
glRenderer->bg[0].x = value;
dirty = false;
break;
case REG_BG0VOFS: case REG_BG0VOFS:
value &= 0x01FF;
glRenderer->bg[0].y = value;
dirty = false;
break;
case REG_BG1HOFS: case REG_BG1HOFS:
value &= 0x01FF;
glRenderer->bg[1].x = value;
dirty = false;
break;
case REG_BG1VOFS: case REG_BG1VOFS:
value &= 0x01FF;
glRenderer->bg[1].y = value;
dirty = false;
break;
case REG_BG2HOFS: case REG_BG2HOFS:
value &= 0x01FF;
glRenderer->bg[2].x = value;
dirty = false;
break;
case REG_BG2VOFS: case REG_BG2VOFS:
value &= 0x01FF;
glRenderer->bg[2].y = value;
dirty = false;
break;
case REG_BG3HOFS: case REG_BG3HOFS:
value &= 0x01FF;
glRenderer->bg[3].x = value;
dirty = false;
break;
case REG_BG3VOFS: case REG_BG3VOFS:
value &= 0x01FF; value &= 0x01FF;
dirty = true; glRenderer->bg[3].y = value;
dirty = false;
break; break;
case REG_BG2PA: case REG_BG2PA:
glRenderer->bg[2].affine.dx = value; glRenderer->bg[2].affine.dx = value;
@ -1124,30 +1139,6 @@ void _cleanRegister(struct GBAVideoGLRenderer* glRenderer, int address, uint16_t
case REG_BG3CNT: case REG_BG3CNT:
GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[3], value); GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[3], value);
break; break;
case REG_BG0HOFS:
glRenderer->bg[0].x = value;
break;
case REG_BG0VOFS:
glRenderer->bg[0].y = value;
break;
case REG_BG1HOFS:
glRenderer->bg[1].x = value;
break;
case REG_BG1VOFS:
glRenderer->bg[1].y = value;
break;
case REG_BG2HOFS:
glRenderer->bg[2].x = value;
break;
case REG_BG2VOFS:
glRenderer->bg[2].y = value;
break;
case REG_BG3HOFS:
glRenderer->bg[3].x = value;
break;
case REG_BG3VOFS:
glRenderer->bg[3].y = value;
break;
case REG_BLDCNT: case REG_BLDCNT:
GBAVideoGLRendererWriteBLDCNT(glRenderer, value); GBAVideoGLRendererWriteBLDCNT(glRenderer, value);
value &= 0x3FFF; value &= 0x3FFF;
@ -1314,8 +1305,6 @@ void GBAVideoGLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
} }
glRenderer->regsDirty = 0; glRenderer->regsDirty = 0;
memcpy(&glRenderer->affine[0][y], &glRenderer->bg[2].affine, sizeof(struct GBAVideoGLAffine));
memcpy(&glRenderer->affine[1][y], &glRenderer->bg[3].affine, sizeof(struct GBAVideoGLAffine));
glRenderer->winNHistory[0][y * 4 + 0] = glRenderer->winN[0].h.start; glRenderer->winNHistory[0][y * 4 + 0] = glRenderer->winN[0].h.start;
glRenderer->winNHistory[0][y * 4 + 1] = glRenderer->winN[0].h.end; glRenderer->winNHistory[0][y * 4 + 1] = glRenderer->winN[0].h.end;
glRenderer->winNHistory[0][y * 4 + 2] = glRenderer->winN[0].v.start; glRenderer->winNHistory[0][y * 4 + 2] = glRenderer->winN[0].v.start;
@ -1325,6 +1314,23 @@ void GBAVideoGLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
glRenderer->winNHistory[1][y * 4 + 2] = glRenderer->winN[1].v.start; glRenderer->winNHistory[1][y * 4 + 2] = glRenderer->winN[1].v.start;
glRenderer->winNHistory[1][y * 4 + 3] = glRenderer->winN[1].v.end; glRenderer->winNHistory[1][y * 4 + 3] = glRenderer->winN[1].v.end;
glRenderer->bg[0].scanlineOffset[y] = glRenderer->bg[0].x;
glRenderer->bg[0].scanlineOffset[y] |= glRenderer->bg[0].y << 12;
glRenderer->bg[1].scanlineOffset[y] = glRenderer->bg[1].x;
glRenderer->bg[1].scanlineOffset[y] |= glRenderer->bg[1].y << 12;
glRenderer->bg[2].scanlineOffset[y] = glRenderer->bg[2].x;
glRenderer->bg[2].scanlineOffset[y] |= glRenderer->bg[2].y << 12;
glRenderer->bg[2].scanlineAffine[y * 4] = glRenderer->bg[2].affine.dx;
glRenderer->bg[2].scanlineAffine[y * 4 + 1] = glRenderer->bg[2].affine.dy;
glRenderer->bg[2].scanlineAffine[y * 4 + 2] = glRenderer->bg[2].affine.sx;
glRenderer->bg[2].scanlineAffine[y * 4 + 3] = glRenderer->bg[2].affine.sy;
glRenderer->bg[3].scanlineOffset[y] = glRenderer->bg[3].x;
glRenderer->bg[3].scanlineOffset[y] |= glRenderer->bg[3].y << 12;
glRenderer->bg[3].scanlineAffine[y * 4] = glRenderer->bg[3].affine.dx;
glRenderer->bg[3].scanlineAffine[y * 4 + 1] = glRenderer->bg[3].affine.dy;
glRenderer->bg[3].scanlineAffine[y * 4 + 2] = glRenderer->bg[3].affine.sx;
glRenderer->bg[3].scanlineAffine[y * 4 + 3] = glRenderer->bg[3].affine.sy;
if (glRenderer->paletteDirty) { if (glRenderer->paletteDirty) {
for (i = 0; i < 512; ++i) { for (i = 0; i < 512; ++i) {
glRenderer->shadowPalette[i] = glRenderer->d.palette[i]; glRenderer->shadowPalette[i] = glRenderer->d.palette[i];
@ -1381,12 +1387,6 @@ void GBAVideoGLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
} }
void _drawScanlines(struct GBAVideoGLRenderer* glRenderer, int y) { void _drawScanlines(struct GBAVideoGLRenderer* glRenderer, int y) {
if (glRenderer->firstAffine >= 0) {
glBindTexture(GL_TEXTURE_2D, glRenderer->layers[GBA_GL_TEX_AFFINE_2]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16I, 2, GBA_VIDEO_VERTICAL_PIXELS, 0, GL_RGBA_INTEGER, GL_SHORT, glRenderer->affine[0]);
glBindTexture(GL_TEXTURE_2D, glRenderer->layers[GBA_GL_TEX_AFFINE_3]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16I, 2, GBA_VIDEO_VERTICAL_PIXELS, 0, GL_RGBA_INTEGER, GL_SHORT, glRenderer->affine[1]);
}
glEnable(GL_SCISSOR_TEST); glEnable(GL_SCISSOR_TEST);
uint32_t backdrop = M_RGB5_TO_RGB8(glRenderer->shadowPalette[0]); uint32_t backdrop = M_RGB5_TO_RGB8(glRenderer->shadowPalette[0]);
@ -1712,19 +1712,6 @@ void _prepareBackground(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBa
} }
void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y) { void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y) {
int inY0 = renderer->firstY + background->y;
int yDiv = (((y + background->y) & ~0xFF) - background->y) & 0xFF;
int inY1 = yDiv + background->y;
int yBase0 = inY0 & 0xFF;
int yBase1 = inY1 & 0xFF;
if (background->size == 2) {
yBase0 += inY0 & 0x100;
yBase1 += inY1 & 0x100;
} else if (background->size == 3) {
yBase0 += (inY0 & 0x100) << 1;
yBase1 += (inY1 & 0x100) << 1;
}
const struct GBAVideoGLShader* shader = &renderer->bgShader[background->multipalette ? 1 : 0]; const struct GBAVideoGLShader* shader = &renderer->bgShader[background->multipalette ? 1 : 0];
const GLuint* uniforms = shader->uniforms; const GLuint* uniforms = shader->uniforms;
glUseProgram(shader->program); glUseProgram(shader->program);
@ -1733,28 +1720,11 @@ void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer,
glUniform1i(uniforms[GBA_GL_BG_SCREENBASE], background->screenBase); glUniform1i(uniforms[GBA_GL_BG_SCREENBASE], background->screenBase);
glUniform1i(uniforms[GBA_GL_BG_CHARBASE], background->charBase); glUniform1i(uniforms[GBA_GL_BG_CHARBASE], background->charBase);
glUniform1i(uniforms[GBA_GL_BG_SIZE], background->size); glUniform1i(uniforms[GBA_GL_BG_SIZE], background->size);
glUniform1iv(uniforms[GBA_GL_BG_OFFSET], GBA_VIDEO_VERTICAL_PIXELS, background->scanlineOffset);
if (yDiv > renderer->firstY) { glScissor(0, renderer->firstY * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, (y - renderer->firstY + 1) * renderer->scale);
int end = yDiv - 1; glUniform2i(uniforms[GBA_GL_VS_LOC], y - renderer->firstY + 1, renderer->firstY);
if (end > y) { glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
end = y;
}
glScissor(0, renderer->firstY * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, (end - renderer->firstY + 1) * renderer->scale);
glUniform2i(uniforms[GBA_GL_VS_LOC], end - renderer->firstY + 1, renderer->firstY);
glUniform2i(uniforms[GBA_GL_BG_OFFSET], background->x, yBase0 - renderer->firstY);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
if (y >= yDiv) {
int start = yDiv;
if (yDiv < renderer->firstY) {
start = renderer->firstY;
}
glScissor(0, start * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, (y - start + 1) * renderer->scale);
glUniform2i(uniforms[GBA_GL_VS_LOC], y - start + 1, start);
glUniform2i(uniforms[GBA_GL_BG_OFFSET], background->x, yBase1 - yDiv);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 }); glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 });
} }
@ -1764,9 +1734,7 @@ void _prepareTransform(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBac
glUniform2i(uniforms[GBA_GL_VS_LOC], y - renderer->firstY + 1, renderer->firstY); glUniform2i(uniforms[GBA_GL_VS_LOC], y - renderer->firstY + 1, renderer->firstY);
glUniform2i(uniforms[GBA_GL_BG_RANGE], renderer->firstAffine, y); glUniform2i(uniforms[GBA_GL_BG_RANGE], renderer->firstAffine, y);
glActiveTexture(GL_TEXTURE0 + 2); glUniform4iv(uniforms[GBA_GL_BG_TRANSFORM], GBA_VIDEO_VERTICAL_PIXELS, background->scanlineAffine);
glBindTexture(GL_TEXTURE_2D, renderer->layers[GBA_GL_TEX_AFFINE_2 + background->index - 2]);
glUniform1i(uniforms[GBA_GL_BG_TRANSFORM], 2);
_prepareBackground(renderer, background, uniforms); _prepareBackground(renderer, background, uniforms);
} }