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[egl] added basic shaders and use dma to xfer buffer to the gpu

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This commit is contained in:
Geoffrey McRae
2018-09-22 18:00:52 +10:00
parent 26434f7baf
commit fff3ec30b8
3 changed files with 107 additions and 28 deletions
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32
client/renderers/egl_model.c
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@@ -42,7 +42,7 @@ struct EGL_Model
bool hasTexture;
GLuint texture;
bool hasPBO, pboUpdate;
bool hasPBO;
GLuint pbo[2];
int pboIndex;
size_t pboWidth, pboHeight;
@@ -105,7 +105,7 @@ bool egl_model_init_streaming(EGL_Model * model, size_t width, size_t height, si
GL_PIXEL_UNPACK_BUFFER,
bufferSize,
NULL,
GL_STREAM_DRAW
GL_DYNAMIC_DRAW
);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
@@ -124,24 +124,14 @@ bool egl_model_stream_buffer(EGL_Model * model, const uint8_t * buffer, size_t b
if (++model->pboIndex == 2)
model->pboIndex = 0;
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, model->pbo[model->pboIndex]);
glBufferData(GL_PIXEL_UNPACK_BUFFER, bufferSize, 0, GL_STREAM_DRAW);
GLubyte * ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
if (!ptr)
{
DEBUG_ERROR("Failed to map the buffer");
glBindTexture(GL_TEXTURE_2D, 0);
glBindTexture(GL_TEXTURE_2D, egl_model_get_texture_id(model));
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, model->pbo[model->pboIndex]);
glBufferData(GL_PIXEL_UNPACK_BUFFER, bufferSize, 0, GL_DYNAMIC_DRAW);
glBufferSubData(GL_PIXEL_UNPACK_BUFFER, 0, bufferSize, buffer);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, model->pboWidth, model->pboHeight, GL_RGBA, GL_UNSIGNED_BYTE, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
return false;
}
memcpy(ptr, buffer, bufferSize);
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
glBindTexture(GL_TEXTURE_2D, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
model->pboUpdate = true;
return true;
}
@@ -210,14 +200,6 @@ void egl_model_render(EGL_Model * model)
if (model->shader)
glUseProgram(0);
if (model->pboUpdate)
{
glBindTexture(GL_TEXTURE_2D, egl_model_get_texture_id(model));
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, model->pbo[model->pboIndex]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, model->pboWidth, model->pboHeight, GL_RGBA, GL_UNSIGNED_BYTE, 0);
model->pboUpdate = false;
}
}
void egl_model_set_shader(EGL_Model * model, EGL_Shader * shader)