GBA Video: Extrapolate edges in affine
Vicki Pfau vi@endrift.com
Wed, 22 May 2019 21:15:23 -0700
2 files changed,
59 insertions(+),
11 deletions(-)
M
include/mgba/internal/gba/renderers/gl.h
→
include/mgba/internal/gba/renderers/gl.h
@@ -96,6 +96,7 @@ GBA_GL_BG_SIZE,
GBA_GL_BG_OFFSET, GBA_GL_BG_INFLAGS, GBA_GL_BG_TRANSFORM, + GBA_GL_BG_RANGE, GBA_GL_BG_MOSAIC, GBA_GL_OBJ_VRAM = 2,
M
src/gba/renderers/gl.c
→
src/gba/renderers/gl.c
@@ -181,6 +181,7 @@ { "size", GBA_GL_BG_SIZE, },
{ "inflags", GBA_GL_BG_INFLAGS, }, { "offset", GBA_GL_BG_OFFSET, }, { "transform", GBA_GL_BG_TRANSFORM, }, + { "range", GBA_GL_BG_RANGE, }, { "mosaic", GBA_GL_BG_MOSAIC, }, { 0 } };@@ -195,22 +196,62 @@ " x * x * x * arr[3];\n"
"}\n" "void loadAffine(int y, out ivec2 mat[4], out ivec2 aff[4]) {\n" - " mat[2] = texelFetch(transform, ivec2(0, y), 0).xz;\n" + " int start = max(range.x, y - 3);\n" " ivec4 splitOffset[4];\n" - " splitOffset[2] = texelFetch(transform, ivec2(1, y), 0);\n" - " mat[0] = texelFetch(transform, ivec2(0, y - 2), 0).xz;\n" - " mat[1] = texelFetch(transform, ivec2(0, y - 1), 0).xz;\n" - " mat[3] = texelFetch(transform, ivec2(0, y + 1), 0).xz;\n" + " mat[0] = texelFetch(transform, ivec2(0, start), 0).xz;\n" + " mat[1] = texelFetch(transform, ivec2(0, start + 1), 0).xz;\n" + " mat[2] = texelFetch(transform, ivec2(0, start + 2), 0).xz;\n" + " mat[3] = texelFetch(transform, ivec2(0, start + 3), 0).xz;\n" - " splitOffset[0] = texelFetch(transform, ivec2(1, y - 2), 0);\n" - " splitOffset[1] = texelFetch(transform, ivec2(1, y - 1), 0);\n" - " splitOffset[3] = texelFetch(transform, ivec2(1, y + 1), 0);\n" + " splitOffset[0] = texelFetch(transform, ivec2(1, start + 0), 0);\n" + " splitOffset[1] = texelFetch(transform, ivec2(1, start + 1), 0);\n" + " splitOffset[2] = texelFetch(transform, ivec2(1, start + 2), 0);\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" + " ivec2 tempMat[3];\n" + " ivec2 tempAff[3];\n" + " tempMat[0] = ivec2(interpolate(mat, -0.75));\n" + " tempMat[1] = ivec2(interpolate(mat, -0.5));\n" + " tempMat[2] = ivec2(interpolate(mat, -0.25));\n" + " tempAff[0] = ivec2(interpolate(aff, -0.75));\n" + " tempAff[1] = ivec2(interpolate(aff, -0.5));\n" + " tempAff[2] = ivec2(interpolate(aff, -0.25));\n" + " if (range.x == y) {\n" + " mat[3] = mat[0];\n" + " mat[2] = tempMat[2];\n" + " mat[1] = tempMat[1];\n" + " mat[0] = tempMat[0];\n" + " aff[3] = aff[0];\n" + " aff[2] = tempAff[2];\n" + " aff[1] = tempAff[1];\n" + " aff[0] = tempAff[0];\n" + " } else if (range.x == y - 1) {\n" + " mat[3] = mat[1];\n" + " mat[2] = mat[0];\n" + " mat[1] = tempMat[2];\n" + " mat[0] = tempMat[1];\n" + " aff[3] = aff[1];\n" + " aff[2] = aff[0];\n" + " aff[1] = tempAff[2];\n" + " aff[0] = tempAff[1];\n" + " } else if (range.x == y - 2) {\n" + " mat[3] = mat[2];\n" + " mat[2] = mat[1];\n" + " mat[1] = mat[0];\n" + " mat[0] = tempMat[0];\n" + " aff[3] = aff[2];\n" + " aff[2] = aff[1];\n" + " aff[1] = aff[0];\n" + " aff[0] = tempAff[0];\n" + " }\n" + " }\n" "}\n"; static const char* const _renderMode2 =@@ -222,6 +263,7 @@ "uniform int charBase;\n"
"uniform int size;\n" "uniform ivec4 inflags;\n" "uniform isampler2D transform;\n" + "uniform ivec2 range;\n" "uniform ivec2 mosaic;\n" "out vec4 color;\n" "out vec4 flags;\n"@@ -262,7 +304,7 @@ " if (mosaic.y > 1) {\n"
" coord.y -= mod(coord.y, mosaic.y);\n" " }\n" " float y = fract(coord.y);\n" - " float lin = 0.5 + y * 0.25;\n" + " float lin = 0.75 + y * 0.25;\n" " vec2 mixedTransform = interpolate(mat, lin);\n" " vec2 mixedOffset = interpolate(offset, lin);\n" " color = fetchTile(ivec2(mixedTransform * coord.x + mixedOffset));\n"@@ -278,6 +320,7 @@ { "size", GBA_GL_BG_SIZE, },
{ "inflags", GBA_GL_BG_INFLAGS, }, { "offset", GBA_GL_BG_OFFSET, }, { "transform", GBA_GL_BG_TRANSFORM, }, + { "range", GBA_GL_BG_RANGE, }, { "mosaic", GBA_GL_BG_MOSAIC, }, { 0 } };@@ -289,6 +332,7 @@ "uniform int charBase;\n"
"uniform ivec2 size;\n" "uniform ivec4 inflags;\n" "uniform isampler2D transform;\n" + "uniform ivec2 range;\n" "uniform ivec2 mosaic;\n" "out vec4 color;\n" "out vec4 flags;\n"@@ -311,7 +355,7 @@ " if (mosaic.y > 1) {\n"
" incoord.y -= mod(incoord.y, mosaic.y);\n" " }\n" " float y = fract(incoord.y);\n" - " float lin = 0.5 + y * 0.25;\n" + " float lin = 0.75 + y * 0.25;\n" " vec2 mixedTransform = interpolate(mat, lin);\n" " vec2 mixedOffset = interpolate(offset, lin);\n" " ivec2 coord = ivec2(mixedTransform * incoord.x + mixedOffset);\n"@@ -338,6 +382,7 @@ { "size", GBA_GL_BG_SIZE, },
{ "inflags", GBA_GL_BG_INFLAGS, }, { "offset", GBA_GL_BG_OFFSET, }, { "transform", GBA_GL_BG_TRANSFORM, }, + { "range", GBA_GL_BG_RANGE, }, { "mosaic", GBA_GL_BG_MOSAIC, }, { 0 } };@@ -350,6 +395,7 @@ "uniform int charBase;\n"
"uniform ivec2 size;\n" "uniform ivec4 inflags;\n" "uniform isampler2D transform;\n" + "uniform ivec2 range;\n" "uniform ivec2 mosaic;\n" "out vec4 color;\n" "out vec4 flags;\n"@@ -372,7 +418,7 @@ " if (mosaic.y > 1) {\n"
" incoord.y -= mod(incoord.y, mosaic.y);\n" " }\n" " float y = fract(incoord.y);\n" - " float lin = 0.5 + y * 0.25;\n" + " float lin = 0.75 + y * 0.25;\n" " vec2 mixedTransform = interpolate(mat, lin);\n" " vec2 mixedOffset = interpolate(offset, lin);\n" " ivec2 coord = ivec2(mixedTransform * incoord.x + mixedOffset);\n"@@ -1534,6 +1580,7 @@
void _prepareTransform(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, const GLuint* uniforms, int y) { glScissor(0, renderer->firstY * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, renderer->scale * (y - renderer->firstY + 1)); glUniform2i(uniforms[GBA_GL_VS_LOC], y - renderer->firstY + 1, renderer->firstY); + glUniform2i(uniforms[GBA_GL_BG_RANGE], renderer->firstAffine, y); glActiveTexture(GL_TEXTURE0 + 2); glBindTexture(GL_TEXTURE_2D, renderer->layers[GBA_GL_TEX_AFFINE_2 + background->index - 2]);