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gles2: Major renderer optimization. Work in progress!

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This moves all the rendering to a command list that is flushed to the GL as
necessary, making most common activities upload a single vertex buffer per
frame and dramatically reducing state changes. In pathological cases,
like Emscripten running on iOS's Safari, performance can go from a dozen
draw calls killing your performance to 1000 draw calls running smoothly.

This is work in progress, and not ready to ship. Among other things, it has
a hardcoded array that isn't checked for overflow. But the basic idea is
sound!
This commit is contained in:
Ryan C. Gordon 2018-09-08 18:26:11 -04:00
parent 7ed7cb5e65
commit 0d3275297d
3 changed files with 490 additions and 459 deletions
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1
src/render/opengles2/SDL_gles2funcs.h
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@ -75,6 +75,7 @@ SDL_PROC(void, glDeleteFramebuffers, (GLsizei, const GLuint *))
SDL_PROC(GLint, glGetAttribLocation, (GLuint, const GLchar *))
SDL_PROC(void, glGetProgramInfoLog, (GLuint, GLsizei, GLsizei*, GLchar*))
SDL_PROC(void, glGenBuffers, (GLsizei, GLuint *))
SDL_PROC(void, glDeleteBuffers, (GLsizei, GLuint *))
SDL_PROC(void, glBindBuffer, (GLenum, GLuint))
SDL_PROC(void, glBufferData, (GLenum, GLsizeiptr, const GLvoid *, GLenum))
SDL_PROC(void, glBufferSubData, (GLenum, GLintptr, GLsizeiptr, const GLvoid *))

920
src/render/opengles2/SDL_render_gles2.c
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File diff suppressed because it is too large Load Diff

28
src/render/opengles2/SDL_shaders_gles2.c
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@ -69,13 +69,13 @@ static const Uint8 GLES2_FragmentSrc_SolidSrc_[] = " \
static const Uint8 GLES2_FragmentSrc_TextureABGRSrc_[] = " \
precision mediump float; \
uniform sampler2D u_texture; \
uniform vec4 u_modulation; \
uniform vec4 u_color; \
varying vec2 v_texCoord; \
\
void main() \
{ \
gl_FragColor = texture2D(u_texture, v_texCoord); \
gl_FragColor *= u_modulation; \
gl_FragColor *= u_color; \
} \
";
@ -83,7 +83,7 @@ static const Uint8 GLES2_FragmentSrc_TextureABGRSrc_[] = " \
static const Uint8 GLES2_FragmentSrc_TextureARGBSrc_[] = " \
precision mediump float; \
uniform sampler2D u_texture; \
uniform vec4 u_modulation; \
uniform vec4 u_color; \
varying vec2 v_texCoord; \
\
void main() \
@ -92,7 +92,7 @@ static const Uint8 GLES2_FragmentSrc_TextureARGBSrc_[] = " \
gl_FragColor = abgr; \
gl_FragColor.r = abgr.b; \
gl_FragColor.b = abgr.r; \
gl_FragColor *= u_modulation; \
gl_FragColor *= u_color; \
} \
";
@ -100,7 +100,7 @@ static const Uint8 GLES2_FragmentSrc_TextureARGBSrc_[] = " \
static const Uint8 GLES2_FragmentSrc_TextureRGBSrc_[] = " \
precision mediump float; \
uniform sampler2D u_texture; \
uniform vec4 u_modulation; \
uniform vec4 u_color; \
varying vec2 v_texCoord; \
\
void main() \
@ -110,7 +110,7 @@ static const Uint8 GLES2_FragmentSrc_TextureRGBSrc_[] = " \
gl_FragColor.r = abgr.b; \
gl_FragColor.b = abgr.r; \
gl_FragColor.a = 1.0; \
gl_FragColor *= u_modulation; \
gl_FragColor *= u_color; \
} \
";
@ -118,7 +118,7 @@ static const Uint8 GLES2_FragmentSrc_TextureRGBSrc_[] = " \
static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
precision mediump float; \
uniform sampler2D u_texture; \
uniform vec4 u_modulation; \
uniform vec4 u_color; \
varying vec2 v_texCoord; \
\
void main() \
@ -126,7 +126,7 @@ static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
vec4 abgr = texture2D(u_texture, v_texCoord); \
gl_FragColor = abgr; \
gl_FragColor.a = 1.0; \
gl_FragColor *= u_modulation; \
gl_FragColor *= u_color; \
} \
";
@ -163,7 +163,7 @@ static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
"uniform sampler2D u_texture;\n" \
"uniform sampler2D u_texture_u;\n" \
"uniform sampler2D u_texture_v;\n" \
"uniform vec4 u_modulation;\n" \
"uniform vec4 u_color;\n" \
"varying vec2 v_texCoord;\n" \
"\n" \
@ -185,7 +185,7 @@ static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
"\n" \
" // That was easy. :) \n" \
" gl_FragColor = vec4(rgb, 1);\n" \
" gl_FragColor *= u_modulation;\n" \
" gl_FragColor *= u_color;\n" \
"}" \
#define NV12_SHADER_BODY \
@ -205,7 +205,7 @@ static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
"\n" \
" // That was easy. :) \n" \
" gl_FragColor = vec4(rgb, 1);\n" \
" gl_FragColor *= u_modulation;\n" \
" gl_FragColor *= u_color;\n" \
"}" \
#define NV21_SHADER_BODY \
@ -225,7 +225,7 @@ static const Uint8 GLES2_FragmentSrc_TextureBGRSrc_[] = " \
"\n" \
" // That was easy. :) \n" \
" gl_FragColor = vec4(rgb, 1);\n" \
" gl_FragColor *= u_modulation;\n" \
" gl_FragColor *= u_color;\n" \
"}" \
/* YUV to ABGR conversion */
@ -284,13 +284,13 @@ static const Uint8 GLES2_FragmentSrc_TextureExternalOESSrc_[] = " \
#extension GL_OES_EGL_image_external : require\n\
precision mediump float; \
uniform samplerExternalOES u_texture; \
uniform vec4 u_modulation; \
uniform vec4 u_color; \
varying vec2 v_texCoord; \
\
void main() \
{ \
gl_FragColor = texture2D(u_texture, v_texCoord); \
gl_FragColor *= u_modulation; \
gl_FragColor *= u_color; \
} \
";