Commit 2970710b5dbdcf2f2fa674c29ada6e458e2c4149
2022-09-15T07:41:29
Pretty print shaders for debugging purposes
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diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index e882577..306b518 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -521,6 +521,22 @@ GLES2_CacheShader(GLES2_RenderData *data, GLES2_ShaderType type, GLenum shader_t
SDL_assert(num_src <= SDL_arraysize(shader_src_list));
+#ifdef DEBUG_PRINT_SHADERS
+ {
+ int i;
+ char *message = NULL;
+
+ SDL_asprintf(&message, "Compiling shader:\n");
+ for (i = 0; i < num_src; ++i) {
+ char *last_message = message;
+ SDL_asprintf(&message, "%s%s", last_message, shader_src_list[i]);
+ SDL_free(last_message);
+ }
+ SDL_Log("%s\n", message);
+ SDL_free(message);
+ }
+#endif
+
/* Compile */
id = data->glCreateShader(shader_type);
data->glShaderSource(id, num_src, shader_src_list, NULL);
@@ -541,10 +557,10 @@ GLES2_CacheShader(GLES2_RenderData *data, GLES2_ShaderType type, GLenum shader_t
}
}
if (info) {
- SDL_SetError("Failed to load the shader: %s", info);
+ SDL_SetError("Failed to load the shader %d: %s", type, info);
SDL_small_free(info, isstack);
} else {
- SDL_SetError("Failed to load the shader");
+ SDL_SetError("Failed to load the shader %d", type);
}
data->glDeleteShader(id);
return 0;
diff --git a/src/render/opengles2/SDL_shaders_gles2.c b/src/render/opengles2/SDL_shaders_gles2.c
index 54a5896..cd7f6f1 100644
--- a/src/render/opengles2/SDL_shaders_gles2.c
+++ b/src/render/opengles2/SDL_shaders_gles2.c
@@ -32,117 +32,122 @@
* Vertex/fragment shader source *
*************************************************************************************************/
-static const char GLES2_Fragment_Include_Best_Texture_Precision[] = "\n\
- #ifdef GL_FRAGMENT_PRECISION_HIGH\n\
- #define SDL_TEXCOORD_PRECISION highp\n\
- #else\n\
- #define SDL_TEXCOORD_PRECISION mediump\n\
- #endif\n\
- precision mediump float;\n\
-";
-
-static const char GLES2_Fragment_Include_Medium_Texture_Precision[] = "\n\
- #define SDL_TEXCOORD_PRECISION mediump\n\
- precision mediump float;\n\
-";
-
-static const char GLES2_Fragment_Include_High_Texture_Precision[] = "\n\
- #define SDL_TEXCOORD_PRECISION highp\n\
- precision mediump float;\n\
-";
-
-static const char GLES2_Fragment_Include_Undef_Precision[] = "\n\
- #define mediump\n\
- #define highp\n\
- #define lowp\n\
- #define SDL_TEXCOORD_PRECISION\n\
-";
-
-static const char GLES2_Vertex_Default[] = " \
- uniform mat4 u_projection; \
- attribute vec2 a_position; \
- attribute vec4 a_color; \
- attribute vec2 a_texCoord; \
- varying vec2 v_texCoord; \
- varying vec4 v_color; \
- \
- void main() \
- { \
- v_texCoord = a_texCoord; \
- gl_Position = u_projection * vec4(a_position, 0.0, 1.0);\
- gl_PointSize = 1.0; \
- v_color = a_color; \
- } \
-";
-
-static const char GLES2_Fragment_Solid[] = " \
- varying mediump vec4 v_color; \
- \
- void main() \
- { \
- gl_FragColor = v_color; \
- } \
-";
-
-static const char GLES2_Fragment_TextureABGR[] = " \
- uniform sampler2D u_texture; \
- varying mediump vec4 v_color;\n\
- varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n\
- \
- void main() \
- { \
- gl_FragColor = texture2D(u_texture, v_texCoord); \
- gl_FragColor *= v_color; \
- } \
-";
+static const char GLES2_Fragment_Include_Best_Texture_Precision[] = \
+"#ifdef GL_FRAGMENT_PRECISION_HIGH\n" \
+"#define SDL_TEXCOORD_PRECISION highp\n" \
+"#else\n" \
+"#define SDL_TEXCOORD_PRECISION mediump\n" \
+"#endif\n" \
+"\n" \
+"precision mediump float;\n" \
+"\n" \
+;
+
+static const char GLES2_Fragment_Include_Medium_Texture_Precision[] = \
+"#define SDL_TEXCOORD_PRECISION mediump\n" \
+"precision mediump float;\n" \
+"\n" \
+;
+
+static const char GLES2_Fragment_Include_High_Texture_Precision[] = \
+"#define SDL_TEXCOORD_PRECISION highp\n" \
+"precision mediump float;\n" \
+"\n" \
+;
+
+static const char GLES2_Fragment_Include_Undef_Precision[] = \
+"#define mediump\n" \
+"#define highp\n" \
+"#define lowp\n" \
+"#define SDL_TEXCOORD_PRECISION\n" \
+"\n" \
+;
+
+static const char GLES2_Vertex_Default[] = \
+"uniform mat4 u_projection;\n" \
+"attribute vec2 a_position;\n" \
+"attribute vec4 a_color;\n" \
+"attribute vec2 a_texCoord;\n" \
+"varying vec2 v_texCoord;\n" \
+"varying vec4 v_color;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" v_texCoord = a_texCoord;\n" \
+" gl_Position = u_projection * vec4(a_position, 0.0, 1.0);\n" \
+" gl_PointSize = 1.0;\n" \
+" v_color = a_color;\n" \
+"}\n" \
+;
+
+static const char GLES2_Fragment_Solid[] = \
+"varying mediump vec4 v_color;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" gl_FragColor = v_color;\n" \
+"}\n" \
+;
+
+static const char GLES2_Fragment_TextureABGR[] = \
+"uniform sampler2D u_texture;\n" \
+"varying mediump vec4 v_color;\n" \
+"varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" gl_FragColor = texture2D(u_texture, v_texCoord);\n" \
+" gl_FragColor *= v_color;\n" \
+"}\n" \
+;
/* ARGB to ABGR conversion */
-static const char GLES2_Fragment_TextureARGB[] = " \
- uniform sampler2D u_texture; \
- varying mediump vec4 v_color;\n\
- varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n\
- \
- void main() \
- { \
- mediump vec4 abgr = texture2D(u_texture, v_texCoord); \
- gl_FragColor = abgr; \
- gl_FragColor.r = abgr.b; \
- gl_FragColor.b = abgr.r; \
- gl_FragColor *= v_color; \
- } \
-";
+static const char GLES2_Fragment_TextureARGB[] = \
+"uniform sampler2D u_texture;\n" \
+"varying mediump vec4 v_color;\n" \
+"varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" mediump vec4 abgr = texture2D(u_texture, v_texCoord);\n" \
+" gl_FragColor = abgr;\n" \
+" gl_FragColor.r = abgr.b;\n" \
+" gl_FragColor.b = abgr.r;\n" \
+" gl_FragColor *= v_color;\n" \
+"}\n" \
+;
/* RGB to ABGR conversion */
-static const char GLES2_Fragment_TextureRGB[] = " \
- uniform sampler2D u_texture; \
- varying mediump vec4 v_color;\n\
- varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n\
- \
- void main() \
- { \
- mediump vec4 abgr = texture2D(u_texture, v_texCoord); \
- gl_FragColor = abgr; \
- gl_FragColor.r = abgr.b; \
- gl_FragColor.b = abgr.r; \
- gl_FragColor.a = 1.0; \
- gl_FragColor *= v_color; \
- } \
-";
+static const char GLES2_Fragment_TextureRGB[] = \
+"uniform sampler2D u_texture;\n" \
+"varying mediump vec4 v_color;\n" \
+"varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" mediump vec4 abgr = texture2D(u_texture, v_texCoord);\n" \
+" gl_FragColor = abgr;\n" \
+" gl_FragColor.r = abgr.b;\n" \
+" gl_FragColor.b = abgr.r;\n" \
+" gl_FragColor.a = 1.0;\n" \
+" gl_FragColor *= v_color;\n" \
+"}\n" \
+;
/* BGR to ABGR conversion */
-static const char GLES2_Fragment_TextureBGR[] = " \
- uniform sampler2D u_texture; \
- varying mediump vec4 v_color;\n\
- varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n\
- \
- void main() \
- { \
- mediump vec4 abgr = texture2D(u_texture, v_texCoord); \
- gl_FragColor = abgr; \
- gl_FragColor.a = 1.0; \
- gl_FragColor *= v_color; \
- } \
-";
+static const char GLES2_Fragment_TextureBGR[] = \
+"uniform sampler2D u_texture;\n" \
+"varying mediump vec4 v_color;\n" \
+"varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" mediump vec4 abgr = texture2D(u_texture, v_texCoord);\n" \
+" gl_FragColor = abgr;\n" \
+" gl_FragColor.a = 1.0;\n" \
+" gl_FragColor *= v_color;\n" \
+"}\n" \
+;
#if SDL_HAVE_YUV
@@ -154,6 +159,7 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"const mat3 matrix = mat3( 1, 1, 1,\n" \
" 0, -0.3441, 1.772,\n" \
" 1.402, -0.7141, 0);\n" \
+"\n" \
#define BT601_SHADER_CONSTANTS \
"// YUV offset \n" \
@@ -163,6 +169,7 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"const mat3 matrix = mat3( 1.1644, 1.1644, 1.1644,\n" \
" 0, -0.3918, 2.0172,\n" \
" 1.596, -0.813, 0);\n" \
+"\n" \
#define BT709_SHADER_CONSTANTS \
"// YUV offset \n" \
@@ -172,6 +179,7 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"const mat3 matrix = mat3( 1.1644, 1.1644, 1.1644,\n" \
" 0, -0.2132, 2.1124,\n" \
" 1.7927, -0.5329, 0);\n" \
+"\n" \
#define YUV_SHADER_PROLOGUE \
@@ -183,7 +191,6 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"\n" \
#define YUV_SHADER_BODY \
-"\n" \
"void main()\n" \
"{\n" \
" mediump vec3 yuv;\n" \
@@ -204,7 +211,6 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"}" \
#define NV12_RA_SHADER_BODY \
-"\n" \
"void main()\n" \
"{\n" \
" mediump vec3 yuv;\n" \
@@ -224,7 +230,6 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"}" \
#define NV12_RG_SHADER_BODY \
-"\n" \
"void main()\n" \
"{\n" \
" mediump vec3 yuv;\n" \
@@ -244,7 +249,6 @@ static const char GLES2_Fragment_TextureBGR[] = " \
"}" \
#define NV21_SHADER_BODY \
-"\n" \
"void main()\n" \
"{\n" \
" mediump vec3 yuv;\n" \
@@ -326,20 +330,21 @@ static const char GLES2_Fragment_TextureNV21BT709[] = \
#endif
/* Custom Android video format texture */
-static const char GLES2_Fragment_TextureExternalOES_Prologue[] = " \
- #extension GL_OES_EGL_image_external : require\n\
-";
-static const char GLES2_Fragment_TextureExternalOES[] = " \
- uniform samplerExternalOES u_texture; \
- varying mediump vec4 v_color; \
- varying SDL_TEXCOORD_PRECISION vec2 v_texCoord; \
- \
- void main() \
- { \
- gl_FragColor = texture2D(u_texture, v_texCoord); \
- gl_FragColor *= v_color; \
- } \
-";
+static const char GLES2_Fragment_TextureExternalOES_Prologue[] = \
+"#extension GL_OES_EGL_image_external : require\n" \
+"\n" \
+;
+static const char GLES2_Fragment_TextureExternalOES[] = \
+"uniform samplerExternalOES u_texture;\n" \
+"varying mediump vec4 v_color;\n" \
+"varying SDL_TEXCOORD_PRECISION vec2 v_texCoord;\n" \
+"\n" \
+"void main()\n" \
+"{\n" \
+" gl_FragColor = texture2D(u_texture, v_texCoord);\n" \
+" gl_FragColor *= v_color;\n" \
+"}\n" \
+;
/*************************************************************************************************