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[PICA] Invert y axis on UVs

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wheremyfoodat 2023-02-28 22:53:39 +02:00
parent d7c2c27e99
commit 421f9acd11
1 changed files with 7 additions and 5 deletions
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12
src/core/renderer_gl/renderer_gl.cpp
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@ -12,15 +12,17 @@ const char* vertexShader = R"(
layout (location = 0) in vec4 coords; layout (location = 0) in vec4 coords;
layout (location = 1) in vec4 vertexColour; layout (location = 1) in vec4 vertexColour;
layout (location = 2) in vec2 inUVs; layout (location = 2) in vec2 inUVs_texture0;
out vec4 colour; out vec4 colour;
out vec2 UVs; out vec2 tex0_UVs;
void main() { void main() {
gl_Position = coords * vec4(1.0, 1.0, -1.0, 1.0); gl_Position = coords * vec4(1.0, 1.0, -1.0, 1.0);
colour = vertexColour; colour = vertexColour;
UVs = inUVs;
// Flip y axis of UVs because OpenGL uses an inverted y for texture sampling compared to the PICA
tex0_UVs = vec2(inUVs_texture0.x, 1.0 - inUVs_texture0.y);
} }
)"; )";
@ -28,7 +30,7 @@ const char* fragmentShader = R"(
#version 420 core #version 420 core
in vec4 colour; in vec4 colour;
in vec2 UVs; in vec2 tex0_UVs;
out vec4 fragColour; out vec4 fragColour;
@ -39,7 +41,7 @@ const char* fragmentShader = R"(
void main() { void main() {
if ((u_textureConfig & 1u) != 0) { // Render texture 0 if enabled if ((u_textureConfig & 1u) != 0) { // Render texture 0 if enabled
fragColour = texture(u_tex0, UVs); fragColour = texture(u_tex0, tex0_UVs);
} else { } else {
fragColour = colour; fragColour = colour;
} }