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metal: reimplement explicit attribute locations

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Also reimplement temporary uniform buffer hack
This commit is contained in:
Alex Szpakowski
2020-07-29 19:15:22 -03:00
parent 3ae4a0f76b
commit 2e4b1f5dd9
1 changed files with 19 additions and 6 deletions
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src/modules/graphics/Shader.cpp
+19 -6
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@@ -49,6 +49,11 @@ static const char global_syntax[] = R"(
#else
#define LOVE_HIGHP_OR_MEDIUMP mediump
#endif
#if __VERSION__ >= 300
#define LOVE_IO_LOCATION(x) layout (location = x)
#else
#define LOVE_IO_LOCATION(x)
#endif
#define number float
#define Image sampler2D
#define ArrayImage sampler2DArray
@@ -75,7 +80,13 @@ static const char global_uniforms[] = R"(
// According to the GLSL ES 1.0 spec, uniform precision must match between stages,
// but we can't guarantee that highp is always supported in fragment shaders...
// We *really* don't want to use mediump for these in vertex shaders though.
#if __VERSION__ >= 300 && defined(LOVE_USE_UNIFORM_BUFFERS)
layout (std140) uniform love_UniformsPerDrawBuffer {
highp vec4 love_UniformsPerDraw[13];
};
#else
uniform LOVE_HIGHP_OR_MEDIUMP vec4 love_UniformsPerDraw[13];
#endif
// These are initialized in love_initializeBuiltinUniforms below. GLSL ES can't
// do it as an initializer.
@@ -253,9 +264,9 @@ void setPointSize() {
)";
static const char vertex_main[] = R"(
attribute vec4 VertexPosition;
attribute vec4 VertexTexCoord;
attribute vec4 VertexColor;
LOVE_IO_LOCATION(0) attribute vec4 VertexPosition;
LOVE_IO_LOCATION(1) attribute vec4 VertexTexCoord;
LOVE_IO_LOCATION(2) attribute vec4 VertexColor;
varying vec4 VaryingTexCoord;
varying vec4 VaryingColor;
@@ -285,10 +296,10 @@ static const char pixel_header[] = R"(
// TODO: We should use reflection or something instead of this, to determine
// how many outputs are actually used in the shader code.
#ifdef LOVE_MULTI_RENDER_TARGETS
layout(location = 0) out vec4 love_RenderTargets[love_MaxRenderTargets];
LOVE_IO_LOCATION(0) out vec4 love_RenderTargets[love_MaxRenderTargets];
#define love_PixelColor love_RenderTargets[0]
#else
layout(location = 0) out vec4 love_PixelColor;
LOVE_IO_LOCATION(0) out vec4 love_PixelColor;
#endif
#else
#ifdef LOVE_MULTI_RENDER_TARGETS
@@ -471,7 +482,9 @@ std::string Shader::createShaderStageCode(Graphics *gfx, ShaderStage::StageType
if (isGammaCorrect())
ss << "#define LOVE_GAMMA_CORRECT 1\n";
if (info.usesMRT)
ss << "#define LOVE_MULTI_RENDER_TARGETS 1";
ss << "#define LOVE_MULTI_RENDER_TARGETS 1\n";
if (gfx->getRenderer() == Graphics::RENDERER_METAL)
ss << "#define LOVE_USE_UNIFORM_BUFFERS 1\n"; // FIXME: this is temporary
ss << glsl::global_syntax;
ss << stageinfo.header;
ss << glsl::global_uniforms;