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[Feat] (Getter): Implement GetIntegerv.

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This commit is contained in:
BZLZHH
2025-05-17 10:25:58 +08:00
parent 8805694fb9
commit 7debcd7927
2 changed files with 167 additions and 23 deletions
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MG/MG_GL/Implementations/GL/Getter/GL_Getter.cpp
+166 -22
View File
@@ -114,37 +114,181 @@ namespace MG_GL::GL {
void GetIntegerv(GLenum pname, GLint *params) {
MG_Util::Debug::LogD("glGetIntegerv, pname: %s", MG_Util::Debug::GLEnumToString(pname));
if (!params) {
MG_State::SetError(GL_INVALID_VALUE);
return;
}
switch (pname) {
case GL_CONTEXT_PROFILE_MASK:
(*params) = GL_CONTEXT_CORE_PROFILE_BIT;
// Viewport and scissor
case GL_VIEWPORT:
memcpy(params, MG_State_T::commonState->viewport, 4 * sizeof(GLint));
break;
case GL_NUM_EXTENSIONS:
static GLint num_extensions = -1;
if (num_extensions == -1) {
const GLubyte* ext_str = MG_GL::GL::GetString(GL_EXTENSIONS);
char *copy = strdup((const char *) ext_str);
char *token = strtok(copy, " ");
num_extensions = 0;
while (token) {
num_extensions++;
token = strtok(nullptr, " ");
}
free(copy);
}
(*params) = num_extensions;
case GL_SCISSOR_BOX:
// TODO: memcpy(params, MG_State_T::commonState->scissorBox, 4 * sizeof(GLint));
break;
case GL_MAJOR_VERSION:
(*params) = MG_Global::GL::GLVersionMajor;
case GL_MAX_VIEWPORT_DIMS: {
static const GLint maxDims[2] = {16384, 16384};
memcpy(params, maxDims, sizeof(maxDims));
break;
case GL_MINOR_VERSION:
(*params) = MG_Global::GL::GLVersionMinor;
}
// Buffer bindings
case GL_ARRAY_BUFFER_BINDING:
params[0] = static_cast<GLint>(MG_State_T::bufferState->GetCurrentBinding(GL_ARRAY_BUFFER));
break;
case GL_ELEMENT_ARRAY_BUFFER_BINDING:
params[0] = static_cast<GLint>(MG_State_T::vertexArrayState->GetBoundElementBuffer());
break;
case GL_DRAW_FRAMEBUFFER_BINDING:
params[0] = static_cast<GLint>(MG_State_T::framebufferState->currentBindings_[GL_DRAW_FRAMEBUFFER]);
break;
case GL_READ_FRAMEBUFFER_BINDING:
params[0] = static_cast<GLint>(MG_State_T::framebufferState->currentBindings_[GL_READ_FRAMEBUFFER]);
break;
case GL_RENDERBUFFER_BINDING:
// TODO: params[0] = static_cast<GLint>(MG_State_T::framebufferState->currentRenderbuffer_);
break;
// Program state
case GL_CURRENT_PROGRAM:
params[0] = static_cast<GLint>(MG_State_T::programState->currentProgram_);
break;
case GL_MAX_VERTEX_ATTRIBS:
// TODO: Check the real value
params[0] = 64;
break;
// Texture state
case GL_TEXTURE_BINDING_2D: {
GLuint unit = MG_State_T::textureState->activeTextureUnit_;
auto& textures = MG_State_T::textureState->textureUnits_[unit].boundTextures;
params[0] = textures.count(GL_TEXTURE_2D) ? static_cast<GLint>(textures[GL_TEXTURE_2D]) : 0;
break;
}
case GL_ACTIVE_TEXTURE:
params[0] = GL_TEXTURE0 + MG_State_T::textureState->activeTextureUnit_;
break;
case GL_MAX_TEXTURE_SIZE:
// TODO: Get real GL_MAX_TEXTURE_SIZE.
(*params) = 65535;
params[0] = 8192;
break;
// Blend state
case GL_BLEND_SRC_RGB:
params[0] = static_cast<GLint>(MG_State_T::commonState->blendSrcRGB);
break;
case GL_BLEND_DST_RGB:
params[0] = static_cast<GLint>(MG_State_T::commonState->blendDstRGB);
break;
case GL_BLEND_SRC_ALPHA:
params[0] = static_cast<GLint>(MG_State_T::commonState->blendSrcAlpha);
break;
case GL_BLEND_DST_ALPHA:
params[0] = static_cast<GLint>(MG_State_T::commonState->blendDstAlpha);
break;
// Depth and stencil
case GL_DEPTH_FUNC:
params[0] = static_cast<GLint>(MG_State_T::commonState->depthFunc);
break;
case GL_DEPTH_WRITEMASK:
params[0] = static_cast<GLint>(MG_State_T::commonState->depthMask);
break;
case GL_STENCIL_REF:
// TODO: params[0] = MG_State_T::commonState->stencilRef;
break;
// Capability enables
case GL_BLEND:
params[0] = MG_State_T::commonState->capabilities[GL_BLEND] ? GL_TRUE : GL_FALSE;
break;
case GL_DEPTH_TEST:
params[0] = MG_State_T::commonState->capabilities[GL_DEPTH_TEST] ? GL_TRUE : GL_FALSE;
break;
case GL_SCISSOR_TEST:
params[0] = MG_State_T::commonState->capabilities[GL_SCISSOR_TEST] ? GL_TRUE : GL_FALSE;
break;
// Pixel operations
case GL_PACK_ALIGNMENT:
params[0] = MG_State_T::commonState->QueryPixelStoreInt(GL_PACK_ALIGNMENT);
break;
case GL_UNPACK_ALIGNMENT:
params[0] = MG_State_T::commonState->QueryPixelStoreInt(GL_UNPACK_ALIGNMENT);
break;
// Hardware limits, TODO: Check the real values
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
params[0] = 32;
break;
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
params[0] = 32;
break;
case GL_MAX_TEXTURE_IMAGE_UNITS:
params[0] = 32;
break;
case GL_MAX_RENDERBUFFER_SIZE:
params[0] = 65537;
break;
case GL_MAX_DRAW_BUFFERS:
params[0] = 32;
break;
case GL_MAX_COLOR_ATTACHMENTS:
params[0] = 32;
break;
// Color state
case GL_COLOR_CLEAR_VALUE: {
const auto& c = MG_State_T::commonState->clearColor;
params[0] = static_cast<GLint>(c[0] * 0x7FFF);
params[1] = static_cast<GLint>(c[1] * 0x7FFF);
params[2] = static_cast<GLint>(c[2] * 0x7FFF);
params[3] = static_cast<GLint>(c[3] * 0x7FFF);
break;
}
case GL_COLOR_WRITEMASK:
params[0] = MG_State_T::commonState->colorMask[0];
params[1] = MG_State_T::commonState->colorMask[1];
params[2] = MG_State_T::commonState->colorMask[2];
params[3] = MG_State_T::commonState->colorMask[3];
break;
// Stencil operations
case GL_STENCIL_CLEAR_VALUE:
// TODO: params[0] = MG_State_T::commonState->stencilClearValue;
break;
case GL_STENCIL_BITS:
// TODO: Check the real value
params[0] = 8;
break;
// Implementation limits
case GL_SUBPIXEL_BITS:
// TODO: Check the real value
params[0] = 4;
break;
case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
// TODO: params[0] = static_cast<GLint>(MG_State_T::textureState->compressedFormats_.size());
break;
case GL_COMPRESSED_TEXTURE_FORMATS:
// TODO: Implement GL_COMPRESSED_TEXTURE_FORMATS
break;
// Polygon state
case GL_POLYGON_OFFSET_FACTOR:
// TODO: params[0] = static_cast<GLint>(MG_State_T::commonState->polygonOffsetFactor);
break;
case GL_POLYGON_OFFSET_UNITS:
// TODO: params[0] = static_cast<GLint>(MG_State_T::commonState->polygonOffsetUnits);
break;
// Others...
default:
MG_Util::Debug::LogE("glGetIntegerv: Invalid enum %s (0x%X)", MG_Util::Debug::GLEnumToString(pname), pname);
MG_State::SetError(GL_INVALID_ENUM);
break;
}
}
}
MG/MG_GL/State/Texture/TextureState.h
+1 -1
View File
@@ -62,7 +62,6 @@ class TextureState {
template <typename K, typename V>
using unordered_map = ankerl::unordered_dense::map<K, V>;
private:
GLuint activeTextureUnit_ = 0;
GLuint lastUsedID_ = 1;
// std::unordered_set<GLuint> freeIDs_;
@@ -96,6 +95,7 @@ public:
GLenum QueryLevelPropertyIntVector(GLenum target, GLint level, GLenum pname, GLint* params);
std::vector<TextureUnitState> textureUnits_;
GLuint activeTextureUnit_ = 0;
private:
size_t CalculatePixelDataSize_(GLenum format, GLenum type, GLsizei width, GLsizei height);
void InvalidateTextureInAllUnits_(GLuint texture);